As the director of a melbourne caulking company we know what to caulk and what not to caulk. A caulk gun and a tube of caulk are valuable equipment for the homeowner. Applying a bead of caulk is both rewarding and straightforward, allowing you to seal cracks and gaps, prepare areas for painting, and prevent water or leaks.

Caulk is particularly valuable because of its versatility, with various types available to repair everything from foundation cracks to bathtub seals. However, it is not a one-size-fits-all solution. Some portions of the home should never be caulked since doing so can retain moisture and create harm.

You should always use caulk that is appropriate for the application. For example, some caulks are flexible and allow joints to move. Some varieties are suitable for outside use, while others excel with different materials. You will need to check the label to find the right caulk for your particular situation.

Where to Caulk

Caulk is especially effective on the exterior of the house around corners and edges. These places are particularly sensitive to water incursion, and caulking helps keep runoff at bay. Door and window frames should also be sealed, even if they have previously been caulked. Older caulk may have come away from the edges and need to be redone from time to time. You should always inspect the areas to ensure that the caulk is still intact and working as it should.

Weatherproof caulk is essential for roof repairs because it seals gaps around skylights, flashing, and other openings. While it can also be used to revive gutters by blocking the leaks. 

You may be able to caulk the joints where certain types of siding meet, thereby helping to keep them in place and preventing moisture from entering your property. However, you should do this to natural siding such as cedar siding that is made to stretch and contract. Caulk can also be used to fix gaps, cracks, and other openings in the siding itself.

Things to Consider When Caulking

When put around plumbing fixtures, drains, sinks, and bathtubs, caulk provides an effective barrier against water damage. Fireproof caulk can seal openings in internal framings, such as those formed by plumbing or wiring, to help control the spread of flames in the event of a fire.

Certain areas of the home’s exterior should not be caulked because they will close off holes needed for air circulation or drainage. These spaces are things such as gaps generated when trim boards lie atop the siding, any wood to metal junctions, weep holes on windows, and garage door panels.

The bottom border of the siding should likewise be left uncaulked. Sealing off this edge can help prevent water runoff, retaining moisture, and leading to problems like mold or mildew.

Similarly, avoid caulking the bottom edges and seams of your fascia trim and soffits. If these places are shut up, any water that does not enter the gutters can become trapped.


Caulking is very beneficial in a variety of ways. However, it is important that you understand when and where to use your caulk to have it be effective and not damaging. You can count on Caulking Contractors Melbourne to assist you with these decisions and help you navigate the confusing world of caulk.

For all your melbourne caulking needs, get in touch today!