Repair Hardboard Siding Before Paint

Thoroughly paint all exposed edges and grooves.

Repair hardboard siding before paint.

The guide below outlines how you can go about repair. Recognized for its density strength and traditional wood appearance masonite hardboard is a partially synthetic alternative to solid wood. Repair masonite hardboard siding using basic supplies like this trowel. It is also one of the easier siding materials to install and repair.

Do not drive the nails flush or countersink them. Use sandpaper to smooth and even the entire hardboard siding surface. Usually the bottom strips or panels of defective masonite siding show the most damage and you can replace these with hardboard siding of the same dimensions before painting all the siding to. When the new siding has been painted two coats of top quality acrylic latex over a primer the repair is hard to spot.

1 scrape all loose paint from around the area to be repaired using a paint scraper or putty. With wood siding the repair is usually necessitated by chips cracks holes warp or rot in the wood. Our page top photo shows loose and improperly installed fiber cement siding on. The best filler for your siding is a two part epoxy product that cures to a rock hard consistency.

Apply the wood putty in layers when filling holes exceeding 1cm. Apply 2 layers of acrylic latex primer using a paintbrush. Make your repair last. Remove the deteriorated hardboard siding using a pry bar and chisel being careful not to damage the good siding above it.

Caulk any nailheads that break the paper face. Wash down the entire hardboard siding with water containing mild detergent and allow the siding to dry completely. Fiber cement board lap siding repair guide. Begin painting the siding by applying acrylic latex primer.

The wood grain pattern on the fiber cement siding is often a perfect match with existing hardboard although it s not as good a match with real rough sawn wood. If needed replace the sheathing behind the siding using 1 2 plywood covered with builder s felt or housewrap. The heads will break the paper face allowing water to soak in and deteriorate the siding. Let each individual layer thoroughly dry before applying the next layer.