Back Prime Siding

Not only does back priming prevent rot it prevents bowing cupping.

Back prime siding.

When back priming be sure to prime the ends of each piece after it has been cut to fit since end grain will absorb the most moisture. He says that when panels are primed in the factory some primer ends up on the back of the boards as they pass over the rollers but this isn t a half hearted attempt at priming the backs. Importance of back priming when installing wood siding. It occurs either when heated or air conditioned air from the house radiates out and meets the cold or hot outside air.

Back priming consists of applying a coat of primer to the reverse side and edges of boards before installing. Kimberly bay 3 4 in. We clearly understand that the best way to generate high customer satisfaction begins by listening and clarifying problems needs and expectations. Back priming natural wood siding helps control rotting mold build up cupping and movement in the wood ultimately giving your siding and your stain finish more longevity.

Frequently today s homes are wrapped with a vapor barrier i e. According to rick crotts my local james hardie representative it s not necessary to back prime any of the company s fiber cement siding products. It simply means coating the backside of wood siding with one coat of naturecolor base coat or natureone before putting the siding up. Tyvek or foiled faced insulation which does not allow large moisture droplets to flow through.

Primed wood nickel gap ship lap siding and wall panel 6 pieces per box. Where is the trapped moisture coming from. All siding takes on seasonal moisture from sources as diverse as direct rain wicking and vapor diffusion through the wall assembly.