I have an old 1900's house which is built on stone & mortar foundation. My question is can I use the spray foam insualtion to seal the gaps in the stone foundation & at the same time water proof the basement from future leaks? I have read on some different foam sites 3 inches is need to mee tthe retarder barrier for water proofing. Any help is great thank you. Or is there a better way to fill in ALL the gaps in the stone wall & seal then.
2007-02-22 02:55:44 · 5 answers · asked by cdsport_99 2 in Home & Garden ➔ Decorating & Remodeling
You can put the spray foam in the cracks for insulation but I believe that if it were mine....I would not bring the foam all the way to the top. I would top off the last inch or so of the crack with mortar. Remember that spray foam really expands as it hardens. It would be a lot easier to put less foam in than to have to clean the excess out. Also, in my experience, if you want to truly do a good job of water proofing basement walls...you need to dig around the foundation, place tile, paint the outside of the walls with a good tar water proofer, and then backfil with stone.
2007-02-22 03:02:50 · answer #1 · answered by toothacres 5 · 0⤊ 0⤋
If you already have leaks, then I would go with the fix it from the outside. Dig down to bottom of foundation and seal it then cover with rubberized membrane made for foundations. I would suggest hiring a contractor to do the exterior. Inside I would use hydraulic cement to replace any loose or missing mortar. I would not paint the stone as it would ruin the asthetics.
2007-02-22 22:15:23 · answer #2 · answered by breezyburgee 4 · 0⤊ 0⤋
spray foam no
what you need is
1. Hydraulic cement to fill the gaps
2 Hydraulic paint to paint and seal the walls
these products are made by UGL-I'm sure they have a web site
as with all projects-preparation is of utmost importance-with the motor joints all loose mortar must be removed-not saying with a chisel-more like a paint brush.-after prepping mortar-fill with hydraulic cement and let dry-for the walls you may need to acid etch before painting-again UGL makes an etch that you mix with water
This is defiantly a DIY project and I have used UGL products with great success-excellent product-in the states they are all available at Home Depot/Loews Diy
remember the better you prep the better the job!
2007-02-22 04:35:18 · answer #3 · answered by Allen L 3 · 0⤊ 0⤋
i am a firm believer in stopping the water on the outside of the house. our stone foundations here are 20 in. thick ,so if you patch the inside theres still 20 in. of penetration of water. if you patch a crack the water will likely back up and come in another one. call a waterproofing specialist and have them fix it right. if you are young and plan on living there a while it will be worth it. or dig around house and point the cracks yourself. you could also rinse off stonework and glue rubber roofing to the stones that are underground. you should install a french drain around it while you have it dug out. alot of old stone foundations have no footer. they dug down till they hit hard pan and started laying stone. i know it seems like a daunting task but a dry basement is worth it and should increase the value of your home.
2007-02-22 03:20:44 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Well you can but heres the problem depending apon the amount of space your talking, expandable foam could be rather pricey, you should mix you up some mud(motrar) patch any large surface cracks and save the foam for the smaller cracks
2007-02-22 03:00:33 · answer #5 · answered by hbettag 2 · 0⤊ 0⤋