If you re applying sealant to siding that is already installed it is essential to throughly clean the wood surface being sealed.
Caulking tongue and groove siding.
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Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed.
It was built this way for that purpose.
Pressure washing can damage cedar so if possible wash by hand.
Wash part of a wall and allow it to dry thoroughly before applying the sealant.
Finally you should refrain from caulking the bottoms of horizontal siding sheets or the edges of the tongue and groove panels.
A variety of siding types fit together by means of tongues and grooves or over and underlapping edges.
The nails holding up the siding should not be caulked.
We did some research and tests and found that the big str.
Cut the tip of a tube of latex caulk at an angle and apply the caulk along the seams.
No do not caulk it.
When the wood contracts you may see some bare wood or primed wood.
Air circulation helps dry the water from behind but the main reason is to allow for expansion and contraction from the seasons.
The plywood is stable and won t move around all year long.
The wider the tongues or lapped sections the better they will keep water out.
Siding nails should not be caulked another item that needs room to play is siding boards themselves.
If you installed a plywood v groove plank wall caulk away.
The wood will expand and contract throughout the year and you need to allow that to happen.
Also avoid caulking tongue and groove siding boards together.
The end matched tongue and groove design makes it an easy install with professional results for any do it yourselfer.
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We had wood particles and dust falling from our tongue and groove ceiling due to some widened gaps.
Go ahead and touch up those areas with some paint.
The layering of siding panels acts as a natural waterproofing that will allow precipitation to fall off naturally so caulking would stop the normal movement and function of your panels.
Find siding contractors near you.
Choosing the right caulk for your siding.
Hopefully installed with the tongue up on a horizontal application.
Because the overlap is less than on other types of siding these provide somewhat less protection from the elements.