Caulking Cement Siding

Is there anything out there you could help me with to repairs cement board siding.

Caulking cement siding.

And i m wondering i ve tried a couple different caulks. Flashing acts as a waterproofing layer for this type of siding and caulking will prevent the flashing from doing its job. Dap alex plus 12 pack 10 1 oz white paintable latex caulk. Also avoid caulking tongue and groove siding boards together.

The last one was quad. Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed. Fiberglass cement siding is a composite made of portland cement silica and wood fiber. Well i ve got cement board siding and occasionally a crack appears.

The best exterior caulk for roofing construction and repairs since it can withstand extreme temperatures and creates a strong insulating and water tight seal. Siding nails should not be caulked another item that needs room to play is siding boards themselves. Item 157140 model 11532. Cleanup can be difficult if you get this caulk on clothing gloves shoes or skin.

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. The nails holding up the siding should not be caulked. 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. 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.

Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur. Fiber cement siding gap clearance caulking specifications. Once painted it looks almost identical to wood.