Caulking Where Siding Meets Concrete

Fill the crack with urethane caulk similar to what you would use for driveway caulk.

Caulking where siding meets concrete.

Use a smooth even motion filling the crack flush with the surface beveling it if it s against the house. I have a cement slab foundation and shiplap board siding attached diagonally. Flashing acts as a waterproofing layer for this type of siding and caulking will prevent the flashing from doing its job. But here the main problem is people usually don t find the right type of caulk for their works.

Applying concrete caulk is easy with just a few simple tips and tricks to get you started. Snip the opening of the tube at a 30 degree angle making the opening the same size as your gap. Concrete caulk comes in several different varieties. Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.

In other words caulking is applied where moisture would otherwise penetrate and cause deterioration. But urethane squirt foam is subject to uv degrada. You need to have the best caulk for hardie siding to help your walls and wooden surfaces to get rid of open cracks and thin spaces between joints. It depends on the exact situation.

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. There s a gap along the bottom edge of the siding where it meets the cement foundation about 4 off the ground. If you use sashco s acrylic latex caulking sealant you can have any interior or exterior as good as new.

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. Mostly what kent said. Best for use with aluminum metal concrete mortar plastics rubber stone vinyl and exterior wood. Good for gutters siding and concrete.

I d like to seal this to make the house more airtight and keep cold air out. 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. 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. A polyurethane caulk works best here but silicone will also do.

Caulking this page is intended to be a supplement to your estimate document.