Can Expanding Foam be used around pipes? Yes indeed it is suitable and also if pipes are copper.

Similarly, Is foam or rubber pipe insulation better?

Foam insulation also shrinks when it is put on a hot pipe, which could leave spaces in between pieces. Rubber is good for cold pipes, but is a more expensive insulation. Fiberglass is not flamable and is usually the cheapest.

Also, Can you spray foam over electrical wires? Spray foam insulation is not corrosive to metal. Most attic insulation products are installed over and around electrical wiring, and spray foam is no exception. The key, of course, is a professional installation, so that potential overheating of electrical wires is totally prevented.

34 Related Questions and Answers Found 💬


What to use to seal around pipes?

Fill smaller gaps or cracks using pipe sealants or caulk. For larger openings, look for expandable polyurethane foam. Some installers prefer to add copper mesh or steel wool as a base layer behind this foam to deter insects that may bore through [source: Potter].

Can you spray foam copper pipes?

Don’t use spray foam such as Great Stuff around heat sources: it will melt and produce toxic fumes. BTW, the reason the holes are so big is probably because there used to be three-inch pipes there.

Will expanding foam stop a leak?

Using expanding polyurethane foam is one of the best ways to stop water leaks because the foam will expand into the cracks and help prevent future leaks. Expanding foam bonds to any type of surface and will quickly and effectively solve your water leak problems.

Can you put steel wool around copper pipes?

Professional pest companies typically use copper or brass wool around copper pipes. Unlike steel, these materials won’t cause a galvanic reaction and corrosion. Professionals also choose stainless steel rather than ordinary steel wool for larger gaps because it won’t rust when wet.

What is the best pipe insulation for outside pipes?

You can use polyethylene pipe insulation for all other hot- and cold-water pipes, but this is rigid and requires fittings at each of the right angles of the pipe. Use fibreglass wrap or foam-and-foil wrap duct insulation for an easy fit around all other pipes and duct work.

Is expanding foam heat resistant?

Fire rated expanding foam can be used as an efficient seal against smoke and gas, providing up to 240 minutes fire rating. As well as being useful due to its excellent filling characteristics, fire rated foam has high thermal properties and provides acoustic insulation.

Do foam pipe covers work?

earlyout wrote: Foam pipe insulation is usually used in crawl spaces or similar locations where there is some danger of freezing. It works well for that purpuse in moderate climates. + in areas where you get condensation, the pipe that goes to the outside hose bib.

How do I seal the AC lines in my house?

One of the biggest energy losses in a home can be not insulating hot water pipes in unconditioned spaces. If you install fiberglass pipe insulation on the same hot water pipes, you will again touch the outside of the insulation. Its not hot, not even warm if you use 1″ thick fiberglass or above!

How do you seal the gap around a gas pipe?

Fireplace Gas Line Not Caulked Or Sealed Around Gas Pipe. The gas line entering into a manufactured firebox area of a fireplace, usually on the left or right side, often has a small gap around the perimeter of the gas line. This small gap should be sealed with a high temperature caulking or sealant.

Is expanding foam dangerous?

Once the foam has fully expanded and dried, manufacturers say it is inert. If the chemicals are not properly mixed, they may not react fully and can remain toxic. In addition to the dangers associated with installation, these chemicals can potentially remain unreacted in the form of dust or shavings.

How hot can Great Stuff foam get?

Cured foam is combustible and will burn if exposed to temperatures above 240°F (116°C). Do not apply GREAT STUFFfoam around heaters, high heat lamps or recessed lighting fixtures, radiators, furnaces or fireplaces where it could contact heat conducting surfaces.

How do you seal pipes through walls?

  1. Locate the pipe in the basement wall that needs sealing.
  2. Use a chisel or a drill equipped with a masonry bit to carefully remove some of the surrounding wall near the pipe.
  3. Remove any debris or dirt from the hole with a wet sponge.
  4. Press hydraulic cement into the hole with a small trowel or putty knife.

How do you insulate PEX tubing?

Does expanding foam damage wiring?

As it is, industry groups have conducted several decades of extensive testing, finding that spray foam insulation does not affect electrical wiring when safely applied and installed. Spray foam insulation is not corrosive to metal.

Can you spray foam over water pipes?

Insulate your attic or crawl space with spray foam insulation. Spray foam helps protect water pipes from cold temperatures. It is also water resistant which makes it ideal for use near water pipes.

Will silicone stick to PVC pipe?

A quick and easy way to seal PVC is with silicone. The pipe must be dry before you apply the silicone; this allows the silicone to set up properly. To seal a PVC pipe with silicon you must first obtain one or more tubes of silicone, then prepare the PVC pipe.

Can you use spray foam around PEX pipe?

We use PVC caulking and Great Stuff foam for weatherizing the plywood and framing joints; but they are strictly not to be used with PEX and; then there are the clean up solvents (mineral spirits, et al) and asphalt based window and panel sealing will also harm PEX.

How do you seal around pipes to prevent mice?

Fill small holes with steel wool. Put caulk around the steel wool to keep it in place. Use lath screen or lath metal, cement, hardware cloth, or metal sheeting to fix large holes.

Does expanding foam corrode copper?

It certainly won’t cause any issues with the copper, so don’t worry about that. Possibly the heat from the hot pipe will degrade the (some) foam immediately in contact with it, but actually I think even that is very unlikely. (A hot ‘cylinder’ is effectively a big copper tank covered in exp foam!)

How do I seal the AC lines in my house?

Yes, absolutely. If you put spray foam insulation in a building, it needs a thermal barrier. That’s what separates it from the occupied spaces. If there’s a fire in the building, a thermal barrier keeps the combustible spray foam from the flames to increase fire resistance.

How long do copper pipes last?


Is expanding foam waterproof?

This version of Great Stuff expanding foam also offers water resistance. It is not meant to be in constant direct contact with water but is suitable for outside locations where exposure to water is likely. Examples include sealing around external piping and faucets, basement areas, and electrical and cable lines.

How do you seal bathroom pipes?

You apply epoxy directly onto the leaking pipe, like you would with caulk or plumber’s putty. The epoxy will temporarily form a seal over the leak. 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.

How do you seal bathroom pipes?

Spread silicone on all four sides of the hole and at the slit at the bottom to completely seal the edges (Photo 3). You may need to tape the rubber to the siding temporarily until the caulk dries. Let the caulk dry overnight, then partially fill the boot with foam; seal the hole from the inside as well.

How do you seal a cable hole?

They are called “wire grommets” or “electrical bulkhead fittings”, and if you search for those (or some combination of those words) you should find what you’re after. I typically seal large exterior holes with expanding foam, and smaller holes with silicone caulk.

What temperature can you use spray foam?

Minimum substrate temperatures

Most spray foam manufacturers spec a surface temperature range between 60°F and 80°F. An uninsulated wood sill on a very cold January day could easily get below 60°F. Hell, it would probably get below 45°F. This problem can easily be sussed out with a simple laser thermometer.

Does steel wool corrode copper?

Steel touching copper water pipes can lead to electrolysis. Over time this can destroy the integrity of copper piping. Actually, it is called a “Galvanic Reaction” or “Galvanic Corrosion“. In this case, the copper would be fine, it’s the steel wool that would corrode.

Will spray foam hurt PEX?

PEX piping is chemical resistant and will not adversely react with Versi-Foam products.

What R value is needed to keep pipes from freezing?

Minimum substrate temperatures

Most spray foam manufacturers spec a surface temperature range between 60°F and 80°F. An uninsulated wood sill on a very cold January day could easily get below 60°F. Hell, it would probably get below 45°F. This problem can easily be sussed out with a simple laser thermometer.

Is great stuff corrosive?

Then their are one part spray foams like great stuff. The chemicals they are made from are corrosive to metal if not cured perfectly. Great stuff should not be used in a bus.

Can I put copper pipes in concrete?