Caulking Hardiplank Lap Siding

Similar to paint previous coats of.

Caulking hardiplank lap siding.

James hardie color match caulk osi quad caulk for exterior door window and siding applications color matched to james hardie colors uv water resistant will not crack or yellow 1 tube covers 29 lineal feet at 1 4 bead width or 13 lineal feet at a 3 8 bead width paintable. It will look okay on day one but caulk is not designed to be used as a touch up and it will weather at a different pace than the siding. 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. 12 hardiplank james hardie warranty claims information tel.

Deterioration of the caulking in the joint has become a maintenance issue for home owners over time. A diyer or a novice painter might attempt to achieve a cleaner look by caulking the siding nails but the nail is guaranteed to push the caulking material out within a few months. Joint flashing butt joint horizontal lap treatment june 2014 james hardie does not recommend caulking butt joints or the horizontal overlaps joint flashing 6 in. Hardie no longer recommends the caulking of any joint in their lap siding colorplus or primed.

152 4 mm wide 1 in. This video is about how to like a pro. Flashing acts as a waterproofing layer for this type of siding and caulking will prevent the flashing from doing its job. Is the old caulking removed before new coats are applied.

25 4 mm on overlap no caulk figure 1. Apparently no one here read the technical bulletin 9 that james hardie released in 2008. 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.

Lastly james hardie does not allow the use of colour matched caulking for touch ups. Osi quad product brochure. This technical bulletin is an explanation supporting the announcement made by james hardie on september 8th 2008 withdrawing its recommendation on the use of caulk at field butt joints for hardieplank lap siding.