1 many foams are not uv resistant and 2 the expansion might warp your siding.
How to seal water spigot on siding.
Use caulk to patch small cracks in foundations and siding or use it to seal joints where the siding meets the roof or foundation.
From the inside of the house seal the backside of the grout with expanding foam just enough to stop any air 1 2 inches deep.
I d caution against using spray foam on the outer side because.
You may need to tape the rubber to the siding temporarily until the caulk dries.
On the inside you could use spray foam.
Make the notch about 1 4 inch wider than the faucet pipe.
Spread silicone on all four sides of the hole and at the slit at the bottom to completely seal the edges photo 3.
Notch the bottom of the piece of vinyl you want to fit around the faucet using tin snips.
Simply apply this inexpensive filler into the cracks to seal.
Let the caulk dry overnight then partially fill the boot with foam.
Step 6 seal small cracks and gaps in your siding under 1 4 inch wide using an acrylic latex caulk.
Add caulk around window frames as well as around any air intake or exhaust grilles.
Fill any large gaps with sanded grout in the face of the stone let that dry then seal the outside of the pipe to the grout after it dries with vulkem caulking.
Caulk is cheap easy to apply and can go a long way towards keeping bugs out.
Check to be sure weep holes are open along bottom of window openings.
Inspect the area above the leak including both indoors and out.
Seal the hole from the inside as well.
Use a caulking gun to apply a continuous bead of silicone sealant along the vertical seams between the vinyl j channels and the exterior window casings.
Put on your gloves bring a rag for cleaning spills then visit the cracks and gaps you spotted along your siding.
6 cut the siding into two pieces if the faucet.