Caulking Split In Siding Joints

When deciding how to use caulk on your siding however it is generally more important to consider where you should not use it.

Caulking split in siding joints. If the siding joint is so tight that the caulk only bridges the gap it may split again. Joint flashing is recommended for all hardie lap siding now. Do i have to caulk at butt joints. It is generally not a good idea to use caulking on wood siding.

If overused or incorrectly placed siding caulk can cause more damage to your exterior than good. Sometimes the old caulk must be razor cut from these butt joints. If you use sashco s acrylic latex caulking sealant you can have any interior or exterior as good as new. You need to have the best caulk for hardie siding to help your walls and wooden surfaces to get rid of open cracks and thin spaces between joints.

Lp requires a minimum 3 16 spacing at all butt joints. Siding nails should not be caulked another item that needs room to play is siding boards themselves. Deterioration of the caulking in the joint has become a maintenance issue for home owners over time. The nails holding up the siding should not be caulked.

Hardie no longer recommends the caulking of any joint in their lap siding colorplus or primed. Caulk is a substance designed to seal a joint between two surfaces and to fill small holes. How much space do you need between lap siding pieces. Use top quality caulk outdoors where it needs to withstand extreme temperature changes and remain flexible for 30 to 50 years.

Although i do not understand why they have not changed the information about caulking. But here the main problem is people usually don t find the right type of caulk for their works. If the caulk is put on with too small of a bead it is more susceptible to cracking and splitting. 1 i chose this caulk because it has 25 flexibility compared to silicone based caulk.

Sometimes the old caulk in the siding joint is cracked and you need to cut the old caulk out with a razor knife. 2 house built before 2008 so has no flashing okay to caulk. Also avoid caulking tongue and groove siding boards together. This is where the siding in the middle of the wall butts up against another piece of siding.

Metal flashing or any metal to wood joint should not be caulked another water exit pathway that should never be sealed. Before caulking joints between dissimilar materials make sure that the manufacturer recommends the caulk for both materials.