Back Priming Pine Siding

Oil based primer blocks stains and fills pores well but it s noxious to use it dries slowly and it creates hazardous.

Back priming pine siding.

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. Back priming siding yes you should always back prime as it will balance the wood. Also don t foget to prime the end cuts as that is a vulnurable area as well. Now if you are like me you are wondering where is the trapped moisture coming from.

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. It occurs either when heated or air conditioned air from the house radiates out and meets the cold or hot outside air. I would strongly suggest priming the front back edges and ends of your pine siding with an oil based exterior primer before installation. The pine clapboards we primed with bin could have had a high moisture content and also probably moved a fair amount with seasonal changes flat sawn vs.

Once the siding has been installed apply two coats of a top of the line latex exterior house paint to it. Back priming helps prevent paint from peeling by reducing the amount of water vapor that passes through the wood. Back priming consists of applying a coat of primer to the reverse side and edges of boards before installing. I will also slow down the transfer of moisture which if not done can cause warping.

Where is the trapped moisture coming from. Back priming helps reduce wetting up the back side. All siding takes on seasonal moisture from sources as diverse as direct rain wicking and vapor diffusion through the wall assembly. Apply one coat of primer paint to the back sometimes called back priming edges and ends of siding boards before the cedar is installed.