Prime Leca wall crown before wall plate? Subzero temperatures..

[plan-g]

I will be placing wall plates and roof trusses on a masonry garage made of iso-leca with a cast ring of beam blocks on top.

The work description states that the masonry crown needs to be primed with cement mortar before attaching the wall plates.

The problem is that it is now 10 degrees below zero, and you can't prime with mortar in these conditions.

Is there a trick? Special mortar? Skip priming with mortar under the wall plate? (How important can it be?)

 

[Plupp 405730]

You can proceed with the hammarbandet, it can be polished in the spring..

 

[plan-g]

You can proceed with the top plate, you can polish it in the spring..

Thanks for the reply. Yes, that's probably how it will be.

The manufacturer's point was that it is important to get mortar under the actual top plate.


I guess it won't be a problem to skip that.

 

[Plupp 405730]

Thanks for the reply. Yes, that will probably be the case.

The manufacturer's point was that it's important to get under the tie beam itself.


I guess there won't be any problems skipping it.

I've never seen or done that, no moisture should come there..
Then I'm thinking there is concrete under the tie beam, right?

 

[plan-g]

I have never seen or performed that, no moisture should get there..
Then I think there is concrete under the wall plate, right?

Yes, mostly depending on how you lay the wall plate. The surface upwards is the concrete core, insulation outward, and the U-blocks' leca sides. See image.

 

[Alexn72]

The reason for wanting to apply a primer is that leca is open. This breaks the air exchange in the blocks. By placing the classic felt paper under the wall plate, it helps to avoid air as well. If it is a house with modern ventilation, you want it to be tight, but in the case of a garage, I wouldn't be worried. Additionally, there will be construction plastic that connects with the plaster on the inside, right?

 

[Plupp 405730]

Yes, for the most part anyway, depending on how the top plate is placed. The surface upwards is a concrete core, insulation outwards, and the U-blocks' leca sides. See picture.

[image]

Yes, but as long as you mostly place the top plate on the casting and insulation, I don't see any problem with you being able to access and apply the primer on the Leca part afterwards..