Caulking Cement Siding

And it just kind of swells and shrinks with the weather and it shows after you paint it.

Caulking cement siding.

Item 157140 model 11532. The best exterior caulk for roofing construction and repairs since it can withstand extreme temperatures and creates a strong insulating and water tight seal. Fiber cement siding gap clearance caulking specifications. 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.

Is there anything out there you could help me with to repairs cement board siding. The last one was quad. Flashing acts as a waterproofing layer for this type of siding and caulking will prevent the flashing from doing its job. Once painted it looks almost identical to wood.

The nails holding up the siding should not be caulked. Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed. 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. Also avoid caulking tongue and groove siding boards together.

Well i ve got cement board siding and occasionally a crack appears. Fiberglass cement siding is a composite made of portland cement silica and wood fiber. Dap alex plus 12 pack 10 1 oz white paintable latex caulk. And i m wondering i ve tried a couple different caulks.

Cleanup can be difficult if you get this caulk on clothing gloves shoes or skin. Good for gutters siding and concrete. The following information is adapted expanded a bit from certainteed corporations installation instructions for the company s fiber cement siding products as this is the most comprehensive guide we could find for caulking clearance instructions when installing fiber cement siding.