Slab / Discussions

Can you replace an old slab foundation with an air heated slab?

...slab on grade house and pour a new slab under it, unless of course I’m missing something here. The raft slab insulated slab on grade kit with the air heated rad...

Posted by Mike Molloy Nov. 7, 2019, 8:44 p.m. Slab on Grade 1 Responses

Can you add a screen/sun room and deck to a slab on grade?

...slab but a company that supplies prefab slab on grade kits (Legalett) can easily provide that, see more here – Slab-on-Grade Raft Foundation Insulation Detail...

Posted by Pierre Contant July 1, 2020, 10:55 a.m. Slab on Grade 2 Responses

Does slab on grade need to have in floor heating?

...slab and having flooring over the concrete causing mould issues. A polished concrete slab on grade, or any basement concrete floor, will feel cooler to the touc...

Posted by Lauren Panzani Nov. 13, 2020, 11:06 a.m. New foundations and slab-on-grade 1 Responses

Are slab on grade foundations cheaper than a basement?

...slab on grade over a basement almost every time, and in most cases yes, a slab is cheaper in our experience. But that is partly due to the way we build, where w...

Posted by Jason Nov. 21, 2019, 4:12 p.m. New foundations and slab-on-grade 1 Responses

Can you insulate an existing slab on grade floor?

...slab is exposed to, is at the perimeter. Insulation at that location would provide more return for the money expended and help to isoltate and moderate slab tem...

Posted by Patrick Berkeley Dec. 31, 2020, 10:14 p.m. Foundation and basement improvements 5 Responses

How do you finish the exterior of slab on grade?

I am looking at your example of a slab on grade construction technique and wondering how you finish the exterior of the footing insulation once the forms are r...

Posted by Dave Derouin Oct. 18, 2018, 1:45 p.m. Slab on Grade 1 Responses

Can you use spray foam Insulation under a slab?

...slab with foam polyurethane. If not, why? When building a slab on grade, EPS rigid foam insulation is the most common choice of insulation, for performance and ...

Posted by Linda Martin April 6, 2020, 11:54 a.m. Slab on Grade 1 Responses

How do you prevent mold under flooring of a house on concrete slab?

...slab. I would like to ensure that moisture coming through the slab will not be trapped beneath the flooring. Is your slab built already? It should be protected ...

Posted by Linds Cullen Dec. 31, 2020, 4:11 p.m. Slab on Grade 2 Responses

Can you elevate a slab on grade foundation?

...slab under construction with 14 inches of seamless insulation on the exterior and 12 inches below the slab. Note where the doorway is in the front of the image ...

Posted by Raoul Lions July 27, 2019, 2:47 p.m. Slab on Grade 3 Responses

Should I build a basement or slab on grade?

...slab on grade mainly because of familiarity . Most don’t know how to build a slab on grade so they tend to steer you way from them simply for lack of knowledge ...

Posted by robert baker March 27, 2020, 6:54 p.m. New foundations and slab-on-grade 9 Responses

How do insulate a basement slab that is sloped ?

...slab with dimple membrane, 2" XPS and osb/plywood achored with tapcons. The problem here is that there's a significant slope to a central drain (4" at the lowes...

Posted by Louis-François Lapointe Nov. 11, 2020, 10:34 a.m. Basements improvements 1 Responses

Can you help me choose between a slab on grade and pressure treated wood foundation?

...slab on grade is an alternative to a basement, PWF or concrete, so I'm not sure where you're being advised to mix a PWF and a slab on grade, or how to even do t...

Posted by Margot Simonot May 20, 2019, midnight Slab on Grade 1 Responses

Does insulating a slab on grade make the building less stable?

...slab. What do you think? A Slab on Grade needs to be built correctly, but no, Insulation under a slab floor will not make it less stable. To me that sounds like...

Posted by Nicolas Jalbert May 28, 2018, 4:56 p.m. Slab on Grade 1 Responses

Can you install tubing under a slab on grade foundation to extract heat in winter?

Can tubing for a ground source heat pump be put under a slab on grade prefab form foundation kit to extract winter heat? We generally recommend people check wi...

Posted by Jennifer Cole Aug. 28, 2019, 11:34 a.m. Slab on Grade 1 Responses

What is the best way to build a slab on grade on bedrock?

...slab on grade form kit. You have other option to raft construction.check iso-slab is structural insulated slab kit,cheaper and easiest option to raft kit.

Posted by peter owen Oct. 31, 2019, 3:33 p.m. Slab on Grade 1 Responses

What is the best way to build a slab foundation on a slope?

...slab to the one below. Thanks, Keri There are many ways to build a slab on grade foundation on sloped building lots , but doing three separate slabs isn’t nec...

Posted by keri gelenian Nov. 23, 2020, 6:32 p.m. Foundation choices 1 Responses

Do you have an engineer directory for slab on grade designers?

...slab, but the one lead I can give you would be Legalett that provides raft slabs across all North America . They deliver all over North America, and their kits ...

Posted by Paul Giusto Dec. 30, 2019, 8:12 a.m. Slab on Grade 1 Responses

What are the options for radiant heat with a slab on grade?

What are the advantages and disadvantages for using a product such as Warmboard as an alternative to a radiant heating system that is built directly into the s...

Posted by August Wehrmann Feb. 3, 2019, 6:52 p.m. Delivery: radiant, forced-air and decentralized 1 Responses