sealing holes around pipes. How do you cover a hole in the floor of a radiator? Can you put expanding foam around water pipes? What to use to seal . I was looking to close up the small gap where the exhaust pipe goes into the chimney, because the gas and electric company said carbon monoxide was detected around the opening. I'd like to seal the gap to stop cold . I can't get under the floor so need to seal from above. Putty also helps seal the drains for sinks and tubs. The tops of walls are treated the same as the bottoms: Use sheet stock, like drywall or plywood, to cover the holes. Learn about some types of pipe flanges. Effectively fills gaps, stopping entry of water seepage and soil gases, . Using a saw or drill, cleanly cut all holes no more than 1 inch larger in diameter than the diameter of the pipe. How do you seal a hole around a pipe? Dust the area around the pipe with an old paintbrush or handheld duster to remove dirt, dust and other debris. Cut a hole in the gasket to just fit the width of the pipe. When sealing up holes/dents around pipes to prevent mice, you need to identify all the holes first. There are two holes in the wood floor, and the pipes enter the sink cabinet from the basement, through these holes. Just so long as I don't want much. · Apply caulking or construction adhesive around the hole. My plumber and tile guy say not to worry—they’ll just make the tile hole smaller than the Hardi hole, so the escutcheon will seal against the tile. Allow the foam sealant to thoroughly. About 15 yrs ago I filled the hole around the pipe with expanding foam insulation to keep mice out. Forms a water and gas tight seal around water, sewer and gas pipes in basements. I was going to use expanding foam but was concerned about the heat from the hot pipes. Clean the masonry surface around the pipe with a wire brush. Make sure that the end of the nozzle is directly pointed to the hole. (and if you caulk carefully to prevent any air infiltration, they are unlikely to be attracted to that spot). Family Handyman: Energy Savings: Seal Plumbing and Wiring Holes. In some specific cases, a polyurethane seal is not the most effective solution. Styles 2, 4, 6, and 7 grommets have precut holes— select the proper ID to match your cable. What about one or two Romex cables running through a hole. Load a caulk gun with exterior grade caulking. Print; Every pipe penetration is an opening for outside air, moisture, and pests to enter the home. Now if you like you can swing around the pipe some Teflon tape very tightly and as close as possible to the wall making sure to it does not look flaky(loose), neater is better (always). Invented by a builder who was fed up . Let the caulk dry overnight, then partially fill the boot with foam; seal the hole from the inside as well. If there is a substantial flow, postpone the project until water stops moving through the hole. WA-ZWS seals advantage: Angular displacement of the pipe up to 12º in all directions. These materials can be found at your local hardware store. Either expanding or non-expanding foam sealant is sufficient for filling the gap. Use lath screen or lath metal, cement, hardware cloth, or metal sheeting to fix large holes. should overlap itself so that there is a continuous seal around the pipe. Spray foam offers insulation that won't . The gaps in the brickwork, around . However, if the hole is large, the steel wool would make it easier to fill it with silicone without having it fall into the basement. How do you seal around a heating pipe?. It's a 2 stage furnace and the installers put in 2 pvc pipes that go directly outdoors. G Brown, Feb 10, 2010 #2 palavaman Well-Known Member yep, expanding foam. where it can be difficult to cut a perfectly round clearance hole. Pipe entry boots are easy-to-install, materials are EDPM and 304L stainless steel expander clamps and bands. What scent will keep mice away? Can you put silicone around copper pipes? Does Flex Seal work on copper pipe . Acrylic caulk is durable but shrinks over time. You can use Flex Seal, expanding foam, or silicone sealant to fill and seal the gaps and cracks around your copper pipes. Hole in outside wall from bathroom waste pipe. DON’T apply maximum-expansion foam around windows. Sealing units fit pipe 3 inch to 12 inch (DN80 - DN300). screwfix sell them palavaman, Feb 10, 2010 #3 cgs New Member Picked myself up a can of foam from Screwfix earlier on so I'll get the heating off and get those pesky holes filled. Sealing Gaps Around a Dryer Vent in Easy Steps How to / By Alwin Sander / April 26, 2021 October 20, 2021 The venting system starts at the exhaust pipe that connects to a vent inside the house, before connecting to ductwork at a wall opening and extending outside the house. The plug does not seal the gaps throughout the whole wall or slab and eventually, water finds its way into the gaps and you see water leaking through the wall . You can make one yourself out of an old sheet by cutting it to fit around the skirt and attaching a Velcro strip to the top hem and the side of the sink. Seal all gaps and holes to unconditioned space with caulk or canned spray foam. It will be relatively easy to fill these in, however I don't really know what to use to completely fill and for it to be safe for both plastic and copper hot and cold pipes?. There is a right way The right way Use regular masonry cement to cement a sheet metal "thimble" into the chimney base. The center hole can be drilled to an exact fit. Due to inaccuracies in cutting valve holes in the Hardi, the Hardi holes (in some cases) are a little bigger than the escutcheon seals (up to 3/8″ more on radius). Ideal for filling and insulating of gaps around pipes and other sanitary applications . Plumbing Spray Foam Insulation at Lowes. In the last 2 months, water has trickled in through the well pipe hole. If you are up to the task I would go outside and dig down to where the pipes enter. Sealing gaps around windows is one of the. For larger holes, gaps, or cracks, especially those often found around pipes, you can fill them with steel wool or copper mesh. Symptom: Pipes around plumbing fixtures create gaps that allow air infiltration and even pests. I would seal the inside wall, gap, with expanding foam, use a long nozzle from outside, if you cant get access from inside. We'll show you how to fill gaps in your walls that are difficult and awkward to reach, such as around drainage pipes or extractor fans, using Polycell Expand. Seal up holes, particularly those around pipe work: mice travel around your home by following pipes and wiring. Electrical - AC & DC - Spray foam and running cables? - I know I'm supposed to seal any holes around plumbing and water pipes, with that spray foam stuff, where they pass through the wall plates. The sleeve pipe may be sealed with mortar, tar, expansion foam or any other suitable means. How To Seal the Exterior of Your Home to Keep Pests Out. Caulking Dust the area around the pipe with an old paintbrush or handheld duster to remove dirt, dust and other debris. I know this because I found water in the basement (translation: shop) and the basement ceiling was wet. Bad to seal holes around gas pipes with cement? Ask Question Asked 11 months ago. While the pipes below appear to be sealed, water and vibration eventually turn unprotected seals to dust. Yes, of course, you can tape around pipes with dozens of short strips of TESCON VANA, but this takes more time, leaves you more vulnerable to small air leaks, and won't allow you to adjust the pipe anymore. We'll show you how to fill gaps in your walls that are difficult and awkward to reach, such as around drainage pipes or extractor fans, . To see more ways to use GREAT STUFF Ga. Another idea is semi soft flexible duct seal putty (not plumber's putty) - I used to get it at HD - which comes in 1 lb blocks. Once you have identified air leaks around pipes and vents, both interior and exterior using our "how to find air leaks" guide, use these directions to seal them up. I own my own business and run it with my son. Sealing/insulating the holes around pvc pipes in valve manifold box? Troubleshooting. Can I use spray foam around water pipes?. The epoxy will temporarily form a seal over the leak. Seal the edges with acoustical sealant and foam the gaps. · Screw the flashing to the bottom of . Keep a wet wipe or paper towel nearby to wipe off the nozzle and wipe up any drips. · Fit the gasket over the pipe and press down to . Use reboot style of silicone boot to properly seal existing pipe. #1 G Brown New Member Exp foam will do, apply when pipes are cold. He noticed that where my gas pipe comes into the house, through a hole in the bricks, the hole is sealed with cement or mortar. If it doesn't work, i guess I will . A common location for leaks, and thus putty, is around toilets and drains. The preferred method is to inject the gap around the pipe with high-viscosity polyurethane. 3M Fire Barrier Pillows with 3M CP 25WB sealant to gaps in cable bundles and 3M Putty Pads around pipes. The leak stops sometimes once the ground is saturated. Cut metal flashing larger than the hole so it fits around pipes. Sealing around pipes seated deep inside a core hole or sleeve. fill gaps, cracks and plug leaks in pipes and joints. Invented by a builder who was fed up with mess and hassle, PipeSnug can be fitted externally and internally, giving a smart finish quickly. There are two foam sealants you can use to seal these gaps: Latex foam sealant: Easy to apply and clean up, latex foam can be used to seal up small air leaks and gaps. All American and International pipe sizes may be sealed using WA. Press hydraulic cement into the hole with a small trowel or putty knife. trishm1 asks, I recently used spray foam from a can around an exhaust pipe coming from a hot water tank in the opening of my chimney. Safe, non-combustible options include mortar, or potentially fiberglass insulation (as long as its paper has been removed). It is a precision printed 3D part with a correctly sized O-ring that seals around the 1/2" Copper pipe with a 0. What can I use safely to fill holes around pipes. Once the GREAT STUFF has cured, trim off any excess with a serrated blade if necessary. The penetration is a rough hole with no sleeve. How to Seal Pipe Holes in a Brick Wall. Discussion in 'Plumbing and Central Heating' started by jb1468, 10 Jun 2010. Compression disc pipe sealing is used for multiple pipes through the same opening, large annular spaces, holes or core holes too small for other types of pipe seals, when higher pressure seals are required. As above said, don't grout around pipe, just fit a collar so pipe has movement. Watch this video to find out more. · Insert a tube of exterior-grade silicone-based masonry caulk into a caulking gun . · Apply caulk to the top plate. Square the edges of the hole with a hammer and chisel. It can also be used on different materials, including copper pipes and PVC pipes. This is best done on a bare pipe before water is on, so no cut out on tile. Spraying some expanding foam around the pipe will stabilize it and keep it from banging and rattling. In order to do so, we removed the old faucet and had to scrape out some gray goop that was sealing the hole between the wall and the pipe. This creates a base layer which you can then fill completely with expandable polyurethane foam. Chisel out the previous sealing attempts and thoroughly clean the area. Locate the pipe in the basement wall that needs sealing. That clear vinyl pipe will be impossible to get a seal around. How to Fill Holes Around the Pipes Under Your Kitchen Sink Plumbers make holes for pipes under the sink, but don't always fill them. I drilled using a hole saw 1/8" thick by 2" 4" and 6" circles of poly propelene cut one side open so it can insert it over the tubing and pipes. · For larger holes in the top or bottom . Makeshift a slice of wood that fits snugly into the hole. They just ran silicone around the pvc on the surface of the siding. You can also fill smaller gaps with caulk or use patching compound . The putty is considered one of the basic . Long bolt pipe seals allow access to seal a pipe from inside a building wall at the outside face of the wall. I replaced a hose faucet on an exterior wall of my house. If the pipes/cables are already installed, this is your only option, just be diligent and make the best seal you can. GET A LARGE OFFCUT, FIRST CUT HOLE SMALLER THAN THE PIPE IN LINER, NOW GLUE IT AND INSERT LINER OVER PIPE, DRAW OFFCUT TOWARDS WALL PRESSING . Use foam sealant on larger gaps around windows, baseboards, and other . Mix the QUIKRETE® Hydraulic Water-Stop Cement and make the. You can fill holes around pipes under a kitchen sink (or any other sink in your home) by filling them with steel wool or copper wool and then sealing the patch with caulk, says the Centers for. Use a combination of foam sealant and cement stucco to fill large gaps and voids. line and thermostat wire were the only items running though this hole, so you can imagine the amount of open space around the pipes. Joined: 18 Mar 2008 Messages: 179 Thanks Received: 0 Location: Belfast Country: Hi I have a mouse problem which I am trying to address and most are accessing house through various holes in flooring around pipe work. Spray foam insulation can be used to seal small cracks or even replace traditional insulation to protect entire homes. Are there gaps around your water pipe? It's a good idea to fill them in with GREAT . Spread silicone on all four sides of the hole and at the slit at the bottom to completely seal the edges (Photo 3). Hole size is the determining factor for the number of pipes that can be sealed using multiple disk compression seals. The alternate method sometimes used by contractors is to drill two small holes in the concrete nearby the pipe penetration. When the gap around the pipe is less than ½ inch around the pipe, filling the hole is quick and simple. I'm trying to find the best solution to seal up two holes around radiator pipes that are coming down from the ceiling inside a cupboard (I . He said that this was bad because the. they can be sculpted to fit securely around pipes for and effective, watertight seal. I want to stop the draft coming through. How to fill in holes around waste pipes. You apply epoxy directly onto the leaking pipe, like you would with caulk or plumber's putty. Squeeze the trigger and fill the hole only half of its size as it will expand later on. Roxtec pipe sealing solutions are designed to plug or block the hole . Clamps and wraps are even simpler; you just affix or wrap them around the leak, and they hold in the water until you can get the pipe replaced. ROFLEX has a flexible rubber sleeve that fits around the pipe/wire and can easily accommodate any movement while maintaining an airtight seal. Now we have the new faucet and pipe and need to know what to put in the gap where the dark gray sealant was. Learn how to repair a hole in your drywall. However, I can't seem to find any sort of caulking or sealant that's rated for Class 1 Div 2 (besides the stuff that goes inside of the conduit sealing itself). a watertight seal when the connector is compressed around the pipe OD and is . Look for all the holes around your pipes. Seal around the outside of the conduit with either PVC caulking (preferred) or duct seal. The modular seal design creates a permanent. Put caulk around the steel wool to keep it in place. Best way is a reasonably large but not too large hole drilled in the tile (22mm - 25mm for a 15mm pipe). Take care to smooth the putty to be as flush as possible with the pipe. Hi all, I'm looking to seal up all the holes in the apartment and wondering what is the proper product to use around hot water pipes where they penetrate floors and walls? I have seen high temp silicon which is used for firestopping - seems promising but even that seems a different type of application meant to withstand a one time exposure for. I've been doing some research on how to fill the holes, and it seems like the options are putting escutcheon rings around the pipes where the feed into the ceiling in the basement, stuff copper wool pads around the holes (can't use steel because two different metals will deteriorate over time), or fill with a high-temp sealant (foam or silicone. Epoxy putty is commonly used to seal holes that cause pipes to leak. Apply caulking or construction adhesive around the hole. Are there gaps around your water pipe? It's a good idea to fill them in with GREAT STUFF to stop draf. Don't use spray foam such as Great Stuff around heat sources: it will melt and produce toxic fumes. Just realized it is where mice have been coming inside. Sort by: Oldest Comments (21) rjoh878646 14 years ago Hydraulic cement. Seal around Gas Line Pipe Hole in Aluminum Siding. They are specially formulated so they can be sculpted to fit securely around pipes for and effective, watertight seal. I had a brand new high efficiency furnace installed in my home. Fill gaps about halfway, and the foam will expand to complete the. Linear displacement up to 2" (50 mm). M-Seal is a great asset to the plumbing industry and is used by plumbers, plumbing contractors, . To seal up holes under your house: Cut metal flashing larger than the hole so it fits around pipes. Plumber's putty is a soft, pliable sealing compound that is used to make watertight seals around faucets, drains, and other plumbing parts. Mix the QUIKRETE® Hydraulic Water-Stop Cement and make the initial application iwth a mason's trowel, filling in the hole generously. Note: Because of the continuous improvement of this product, the shape and the color of the product may vary from pictures shown on this site. Long Beach Ed Member Posts: 702. Successful Leak Sealing Injection of high flow leak around pipe penetration. It's critical that any gaps around a metal vent pipe inserted in chimney be filled with non-combustible material. Pipe penetration seal is a reusable, permanent, water-tight rubber seal. Step 3: Fill larger gaps with steel wool and foam. Water leaks around pipe penetrations, such as gas, water, sewer and electrical lines, is a very common problem where pipes enter and exit through concrete walls or slabs. The foam can seal holes between floors where wires and pipes run and can be used to seal gaps around wall outlet boxes to prevent loosening, while at the same time serving as a fire barrier should. sealing small holes (1/4 inch or less) • Several cans of expanding spray foam insulation for illing larger gaps (1/4 inch to 3 inches) • Special high-temperature (heat-resistant) caulk to seal around lues and chimneys • Roll of 14-inch wide aluminum lashing to keep insulation away from the lue pipe • Retractable utility knife and sheet. How To Seal Around Pipes To Prevent Mice – WYPestControl. for sealing around metal pipes, cables, conduits, bus ways. We have had water problems in other areas of the basement,not there, and had an inside trench and sump pump installed 8 yrs ago. Apply spray foam around pipes to seal gaps between them and the drywall. Alternate Foundation Pipe Penetration Sealing. The MetraSeal Pipe Wall Penetration Seal quickly creates a mechanical water-tight seal, filling the space around any round pipe including: concrete, steel, plastic, cast iron, copper, and electrical conduit to name a few. SEALING AROUND PIPES OR PIPEWORK USING BUTYL RUBBER. I also recommend sealing it on the inside penetration. Sealing Pipe Penetrations in Foundation Wall. Do not overfill as GREAT STUFF expands as it cures. Pack the material in tightly and make sure the cement connects with both the pipe and . Solution: Place foam sealant straw applicator or . BTW, the reason the holes are so big is probably because there used to be three-inch pipes there. Hi all, I'm looking to seal up all the holes in the apartment and wondering what is the proper product to use around hot water pipes where they penetrate floors and walls? I have seen high temp silicon which is used for firestopping - seems promising but even that seems a different type of applicati. Foam sealant was originally used. Now you can start to inject(penetrate) the silicone or calk into the gaps and make sure you push into as much as posibble into the gap and surround the neatly placed Teflon tape on the pipe as well. D and the 1/2" Galvanized pipe version fits over a 0. Then the breech pipe will fit into the thimble nice. Styles 5 and 6 will compress and move in your machinery while maintaining their seal. A few years ago we had a sink mess, and water must have gone through these holes. Holes - these are often made in exterior walls for cables and pipes, check that old pipework holes are sealed too. Expanding foam would be a big overkill. Foam sealant is good for sealing gaps around pipes greater than 1/2 inch. It's soft and squishy so nothing rigid like hydraulic cement will seal well against it. I's appreciate any advice on the normal way to fill such holes. For small holes you can try steel wool. When filling large gaps and voids, use a combination of foam sealant and cement stucco · To provide a more natural finish on the surface that is . I noticed the good plumbers around here make the hole larger than the pipe and then wrap with a rubber tape until they get a tight fit. Use a rubber roofing boot to seal holes where air conditioning or plumbing Pry out old putty and caulk from around the pipes and wires. They sealed around the pvc pipes outside with silicone. That’s why our family of products is specifically formulated to seal, insulate, and block unwanted guests. Sealing around pipe penetration in exterior brick wall. Or don't add sand it works good around the flue pipe because it will not burn. Repair Method as Specified: Once the grout patch was fully cured, the contractor drilled a ½” hole through the center of the grout and vacuumed any debris from the hole followed by flushing the hole using a. This is a traditional method of hiding pipes. Fill small holes with steel wool. Widely used in industrial plumbing, water/wastewater, . Boots can be cut to the correct diameter and wrapped around pipes. I've probably had this hole in my siding for a lot of years - probably since we moved in 20 years ago and before that. Cut a slit in the bottom edge so the plumbing boot will fit around the pipes. I need to fix hole in sheathing under siding but also need to seal the big gap between the pipe and the siding. Once you have located where the holes are, you need to seal them properly depending on the size of the hole with either all purpose silicon caulk or spray foam sealant. Seal the large openings with foam. Seal gaps around holes where pipes run through walls or floors, especially where the hole is letting in cold air. Use caulk or canned spray foam to seal piping holes through the top plates, bottom plates, and subfloor. For American and International pipe sizes. Screw the flashing to the bottom of the subfloor using screws that are short enough not to penetrate through the floor above. Air seal around all plumbing and piping installed through walls, ceilings, and flooring to keep conditioned air from leaking into unconditioned space. How to seal around water pipes · WRAP SEAL QUICK REPAIR KIT FOR PIPE LEAKS - CTY TNHH · The trap: function, variants, design, installation and . Will sealing here cause the cables to overheat? And are there. Be sure the edges of the hole are free of dirt and other loose material, then dampen the area slightly. The most effective and most straightforward process for sealing around outside pipes is to use PipeSnug. and electrical pipes near wall. Fast, economical patch clamps repair pin holes, punctures or splits in steel pipe. Further detail about this can be seen here. Hi, I have a hole in the kitchen ceiling where the 22mm copper heating pipes drop down to the boiler. They used some sealant putty similar to plumbers putty, it may have been plumbers putty for all I know, to try to seal the hole. Fix gaps in trailer skirtings and use flashing around the base of the house. Should have been repiped before you had it tiled if you wanted it neat. The holes are rough cut/bigger than the pipes and there are draughts coming through so i want to seal the gaps. Wipe the caulking smooth with your finger. It is a great solution because it sets relatively fast and does a good job at repairing the leak. Request email quote or call Westatlantic 1-902 455-4455. I, myself, used foam backer rod around the PEX and caulked with 3M Fire Barrier Sealant (the blue stuff). Fit a tube of silicone-type sealant in a caulking gun. In addition, other repair methods to seal off the Pipe Penetrations using SwellCaulk and Oakum were also covered during the training. Most importantly, you will NOT stop a carbon monoxide leak by sealing this gap. Look under your sink and around your home's foundation. I would agree that some type of rubber seal would be the best but I would sure take a close look above ground and see where the source of the water is coming from. You don't need to mix mortar or use silicone, and it can be fitted in less than five seconds. Hi I have a mouse problem which I am trying to address and most are accessing house through various holes in flooring around pipe work. In addition to adhesive seals, the rings can be secured to ceiling materials with screws. What is the best way to seal the hole around air conditioning pipes coming into the house (from an external air conditioner)?. Spray GREAT STUFF into the gaps around your pipes. Here are just a few places you can use GREAT STUFF:. I can afford anything that I want. I have dug down to the pipe and am seeking the best diy method to fix. Activate the putty by kneading it for two minutes then plug the leak. Use a dry cloth to blot up water that may have leaked through the hole. Style 7 has room for a large fitting or equipment behind your cable or hose. With a continuous air barrier, the insulation can actually work, and you will be one step closer to the. tie some string to it and knot it. You can fill holes around pipes under a kitchen sink (or any other sink in your home) by filling them with steel wool or copper wool and then sealing the . Here's Deziel to explain how to use it: Fit the tube onto the nozzle, place the end of the tube in the gap and squeeze the trigger. put the cardboard inside the hole . Other caulks, such as polyurethane, fill larger holes due to their better adhesion but are difficult to use as they do not smooth on easily. Using scissors or a razor knife, cut the roof boot to fit around the hole and to match the width of the piece of siding (Photo 2). Trim the center of Styles 1 and 5 grommets to the size you need. Acrylic caulk, easy to apply, fills small holes less than one-quarter inch. You may need to tape the rubber to the siding temporarily until the caulk dries. But can still be done neatly sometimes with a cut out. I started working with pex after 6 years of installing copper. Add some sand and its good for big holes. L lame plumber May 11, 2013 #4. My initial thought was to just use a rubber grommet, but others are saying that we also need additional caulking around the ingress hole. Another even more appealing method for patching drywall around pipes is to fill the gaps with patching compound, which is a powder that sets rock hard when you mix it with water. Sealing plumbing & electrical holes. Kt43010 May 14, 2020, 6:29pm #1. Clean the foam around the pipe, stuff steel wool then use caulking to keep it in place. How do you fill large holes in floorboards? How to Fill Large Holes in Floorboards. Thermal of 120 available using 3M Duct Wrap 615+. Step 1 Locate the pipe in the basement wall that needs sealing. When this has been ascertained, an alternative method can be applied. Attach the removable application tube that will be used to fill the holes around pipes. Oct 31, 2014 - Have you looked under your sinks around the water pipes? If you have gaps around the pipes you have the welcome sign up for cold air and bugs . How do you seal pipe holes in siding? Spread silicone on all four sides of the hole and at the slit at the bottom to completely seal the edges (Photo 3). Best way of sealing around copper pipes?. These are screwed on using stainless steel screws. The desired pipe is then passed through the sleeve and the space between the inner wall of the sleeve and the desired pipe is filled with expansion foam. There's a small gap of about 1/8" around each pipe. Question I have is I want to seal the holes where the pex comes from underneath the crawl space up through the floors to my fixtures. Seal, Insulate, and Reduce Energy Costs HOW TO SEAL PLUMBING PENETRATIONS. A better way is to use a flexible flashing that can stretch around the pipe for a tighter seal. If there are any larger holes, to prevent vermin from entering the building, use some steel wool to fill the hole first. I'm trying to find the best solution to seal up two holes around radiator pipes that are coming down from the ceiling inside a cupboard (I have a photo but no idea how to post it!) Calor's engineers left it that way when they installed our LPG central heating system a few years ago, and as we had so much else to do with renovating the house at. make a bit of cardboard slightly larger than the hole. You can use caulk to fill gaps less than about 1/2 inch wide, and you can fill wider gaps by stuffing them with steel wool and caulking over it. After the initial set, work the patch with the edge of the trowel to firm up the cement around the pipe. Put a bit of pipe insulation around the pipes and then just a skim of Polyfilla or similar to tidy up the bit that you can see. The wall is made of wood, with a vinyl siding on the outside. Learn more about what copper pipes are used for. The manufacturers instruction say to only use water. When companies first install the gas, electric, sewer, and water lines in your home's foundation, they need to create holes for the pipes. MetraSeal Wall Penetration Seal from The Metraflex Company. CAD File for LINK-SEAL® Modular Seals with Cast or Cored Hole Opening(CAD Files) . After much web searching I may do foam again around the pipe, fill in dimple with hydraulic cement, then roofing cement, 6 mil plastic, roofing cement again, and another 6 mil plastic. Because of their many practical uses and easy, tidy application, silicone sealants can be a good alternative to putty for sealing bonds around plumbing . Moving Plumbing Pipes From a Slab to an Attic. Once the foam has cured, you can trim it flush with the house and paint. This characteristic makes it unsuitable for large gaps. Get a used or disposable rag to wipe off the excess spray. Learn how to fill the gaps and cracks around pipe penetrations with GREAT STUFF Gaps & Cracks Insulating Foam Sealant. Viewed 232 times 0 I got a new gas person this year to check my boiler. Plumber's putty is a pliable substance used to create watertight seals around faucets and drains. Solid wood cut to shape (cut a hole in a circle or square of regular 1x lumber with a hole saw exactly the size of the pipe- then cut it in half and attach each side around the pipe) also works- rodents can chew though wood also, but it takes them quite a while and if so, you can hear them in time to make a metal patch before they can get in.