Which is the best sill insulation?

[Nygge72]

Hello, I am planning to build a house and am wondering which is the best (if there is a better brand) sill insulation between the concrete slab and the wooden studs?

Do you also put sill insulation under interior walls that stand on the slab?

Thanks a lot!

 

[tergo]

Do you also apply sill insulation under interior walls that are on the slab?

it might be enough with, e.g., double plastic strips just to be sure that moisture doesn't come from below.

 

[jonaserik]

You

Hello, I am going to build a house and I'm wondering what is the best (if there is a better brand?) sill insulation between the concrete slab and the wooden studs?

Do you also place sill insulation under interior walls that stand against the slab?

Thanks!

You should use a sill paper between the wood and the foundation wall, and a plastic won't do. Sill paper is a thicker variant of tar paper which, under pressure from the wall above, will compress and adhere homogeneously to the wood and foundation wall.

 

[Jansson69]

Hello, I am planning to build a house and am wondering what is the best (if there is a better brand?) sill insulation between the concrete slab and the wooden studs?

Do you also place sill insulation under interior walls that stand against the slab?

Thank you!

If you want the best, it's sill rubber you should have, as it handles smaller unevenness and is easy to use..

 

[jonaserik]

If you want the best, it's sillgummi you should use; it handles minor irregularities and is easy to use.

It's meant for Lecablock, with raised grooves designed for them and not for a sill board.

 

[Jansson69]

It's probably for Lecablock, with raised grooves that are adapted for these and not for a wall plate.

No, they are not...

 

[jonaserik]

No, they are not..

And then the sill will not rest on the entire surface as you show. It cannot be pressed down to create a flat installation as I see it.

 

[Jansson69]

And then the sill will not lie flat on the entire surface as you show. It cannot be pressed down to achieve a flat installation as I see it.

How does sill paper solve unevenness? Not sure what you're after but tighter sill sealing is what you get compared to sill paper..

 

[Discoman]

The rubber must surely get old long before the syllpapp? Feels spontaneously like a bad thing

 

[Jansson69]

The rubber must surely age long before the sill paper? Feels spontaneously like a bad thing

The expected lifespan is over 50 years.
Sill paper is good in crawl space foundations and other masonry works where absolute tightness is not required.

 

[Discoman]

The expected lifespan is over 50 years.
Syllpapp is good in torpa foundations and masonry where absolute tightness is not required.

I will believe those guarantees when and if the product has existed for 50 years. Also, are you then expected to replace the foundation every 50 years?

 

[Jansson69]

I believe in those guarantees if and when the product has been around for 50 years. Moreover, are you then expected to change the sill every 50 years?

This is a sill sealing that has been around for a long time, invented sometime in the 50s if I remember correctly, EPDM is used in sewage and other critical seals and lasts over time, this is well known if you are informed.
I'll include a link you can read since you think I'm just making this up😉
Furthermore, sill paper is not sufficient in most exterior wall constructions simply because it does not seal tight and the cold draft follows...

https://vattenbokhandeln.svensktvat...g-av-rortatningar-av-termoplastisk-elastomer/

 

[Jansson69]

I believe in those guarantees when and if the product has been around for 50 years. Additionally, are you then expected to replace the sill every 50 years?

How long is the lifespan of sillpapp?😉

 

[Anonymiserad 382478]

And then the sill will not lie on the entire surface as you show. It can't be pressed down so it becomes a flat installation as I see it.

The picture is a bit misleading. Probably to clearly simulate the position of the rubber. When the sill is anchored, it sinks down and becomes super tight. These work great.

Important to buy the right size so it matches the frame's dimensions.

 

[Jansson69]

The picture is a bit unfair. Probably to clearly simulate the rubber placement. When the sill anchors, it sinks down and becomes super tight. These work really well.

Important to buy the right size so it matches the structure's dimensions.

Yes, and when the house weight has settled, it shapes itself excellently according to the existing foundation.