A polyurethane caulk works best here but silicone will also do.
Caulking where siding meets concrete.
Urethane caulks are common but many pros prefer to use silicone caulk because it lasts longer and can be used with a variety of different materials.
If you use sashco s acrylic latex caulking sealant you can have any interior or exterior as good as new.
But here the main problem is people usually don t find the right type of caulk for their works.
It works perfectly as a concrete expansion joint sealant.
In other words caulking is applied where moisture would otherwise penetrate and cause deterioration.
Caulking this page is intended to be a supplement to your estimate document.
Use a smooth even motion filling the crack flush with the surface beveling it if it s against the house.
Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
But if the joint is going to be buried behind other finish surfaces and the gap is 1 2 ish or bigger then squirt foam is a good choice.
But urethane squirt foam is subject to uv degrada.
Fill the crack with urethane caulk similar to what you would use for driveway caulk.
Good for gutters siding and concrete.
Applying concrete caulk is easy with just a few simple tips and tricks to get you started.
I have a cement slab foundation and shiplap board siding attached diagonally.
Caulking is a sealant that fills gaps cracks nail holes and similar imperfections on the surface.
Concrete caulk this type of caulk should be used where concrete slabs meet or where they meet with a building.
Concrete caulk comes in several different varieties.
I d like to seal this to make the house more airtight and keep cold air out.
There s a gap along the bottom edge of the siding where it meets the cement foundation about 4 off the ground.
It depends on the exact situation.
Mostly what kent said.
Best for use with aluminum metal concrete mortar plastics rubber stone vinyl and exterior wood.
When james hardie siding products butt into wood based materials a 1 8 gap will allow for expansion and contraction of the wood based product.
Many professionals like those at james hardie also agree that you should not use caulk on fiber cement siding unless there is no metal flashing underneath.
Flashing acts as a waterproofing layer for this type of siding and caulking will prevent the flashing from doing its job.