Cement Board Siding Seams

James hardie recommends the use of caulks and sealants that remain permanently flexible.

Cement board siding seams.

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. Weatherside fiber cement siding is the one and weatherside fiber cement siding is the one and only solution for replacing or repairing old asbestos siding shingles. For pricing and availability. Buckling fiber cement siding may also occur if the product was not properly nailed.

Once painted it looks almost identical to wood. It is available in a variety of sizes and shapes to match many of the old siding shingles installed over the last 60 years. This article series includes field reports of fiber cement board lap siding butt joint gap. Here are the pros cons and costs of hardie board siding to see how it looks under scrutiny.

Fiber cement siding accessories. For pricing and availability. Fiberboard cement siding looks identical to wood once it s painted. Hardie board siding created by james hardie and also known as cement board siding has been around forever but its popularity seems to come in streaks.

7 inch wide smooth lap siding primed about 1 50 per square foot picking the right siding for your house is a delicate balancing act between good looks durability maintenance and affordability. This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted. When you want the classic look of wood siding coupled with lifetime durability fiberboard cement siding may well be your best choice. It is a very simple process and i used some fibatape and thinset mortar to seal the cement board j.

James hardie 8 25 in x 144 in hz10 hardieplank cedarmill fiber cement lap siding. Fiberglass cement siding is a composite made of portland cement silica and wood fiber. In this video i show you how to tape cement board joints. We can see a hard dried layer of caulk that was a bit under 1 8 inch wide inside of the now wide open butt joint between two siding boards.

A common problem with cement board siding products and some other types of horizontal lap siding is that older installation guidelines called for caulking the joint instead of flashing the joint. Buckled fiber cement siding is most likely to occur because the installer failed to give the recommended gap between the ends of the fiber cement boards and abutting vertical trim at corners windows doors etc.