What to Search for in Exterior Caulk

The aim of a sealant, or caulk, on the outside of a house is to seal gaps that permit air and moisture to infiltrate the construction of the house.

That appears easy sufficient, however the actuality of constructing supplies is that they’re always transferring.

Adjustments in temperature and humidity trigger them to repeatedly increase and contract which suggests the dimensions of these gaps are always altering.

Because of this the caulk filling these gaps is often being stretched and squeezed, so if it dries exhausting it should crack inside a season or two because of the motion. To have any longevity in an exterior surroundings, a sealant wants to stay versatile even after it dries.

As a result of most properties are comprised of many several types of supplies, the gaps that must be crammed are sometimes between fully completely different constructing supplies. So, a profitable exterior caulk additionally must bond, or adhere, nicely to all kinds of supplies and floor textures.

As a result of and exterior sealant may be very seen, it’s additionally necessary for it to mix aesthetically with your own home. Some caulk choices are very versatile however can’t be painted and solely are available a couple of colours. Whereas there are many “paintable” caulk choices, a lot of them dry comparatively exhausting inside a couple of months.

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Answer: Elastomeric Caulk

Elastomeric caulk is a good resolution as a result of it has the power to stretch.

Titebond DuraMaster High Performance Sealant, seen sticking between a brick and a piece of molding

Titebond has addressed all these points with their new all-purpose exterior sealant known as TiteShield.

It’s an elastomeric caulk which, because the title implies, can stretch even after it’s fully dry. In actual fact, TiteShield can increase and contract as much as 50% of the joint dimension whereas masking gaps as much as two inches in width.