Exclusion and Sealing for Milwaukee Homes

What tools and materials does a sealing job need?

A sealing job needs a light, a ladder with a stable base, a tape to mark gaps, a flexible caulk, a fine mesh for vents, and a cover material for larger openings. Each has a role, and the list should be kept short and matched to the house.

A bright torch or work light is the most important tool, because the light test from inside is how a gap is confirmed. A roll of painter's tape marks each point so it can be found again. A ladder with a stable base reaches the eaves and soffits, and it should never be used on uneven ground or in wind.

The materials are a flexible caulk for narrow joints, a fine metal mesh for vent openings, and a rigid cover or a packed filler for a larger hole. A caulk gun, a putty knife for removing old material and a damp cloth for cleaning the surface complete the set. The caulk should be one that suits outdoor use and the joint, and the label should be read before use.

• A bright light for the inside test
• Painter's tape to mark points
• Flexible caulk, fine mesh, rigid covers
• A stable ladder, a putty knife and a damp cloth

What is the order of the walk?

Walk the outside from the grade up: the foundation first, then the siding, the windows and doors, the eaves and the roof edges. Working from the bottom keeps the lowest gaps from being missed and lets the top work be done in a single pass.

Start at the foundation and the grade. Look for cracks, open joints and any place where the soil sits against the wall. Then move up the wall to the siding joints, the trim around the windows and doors, and any pipe, cable or hose that enters the house. Mark each point as you go.

After the walls, check the soffit, the eaves and the vents from a ladder where it is safe. The roof edges are the last check, and the point where the roof meets the wall is often a gap. A second pass from inside, with the light, checks each marked point against the room behind it.

How is each kind of gap sealed?

Each kind of gap takes a different material. Narrow joints take caulk, vents take a fine mesh that keeps insects out and lets air pass, and larger openings take a cover or a packed filler sealed over with a suitable material.

For a narrow joint, clean out loose material, dry the surface and apply the caulk so it bonds to both sides. A caulk applied over dust or damp material often fails within a season. Smooth the bead with a damp finger or a tool, and let it cure before painting.

For a vent, cut the mesh to size and fix it so there is no edge a pest can pull back. A torn or missing screen is replaced rather than patched. For a larger opening, a rigid cover or a packed filler sealed over is used, because a loose filler is easily pushed out or chewed.

• Clean, dry, then caulk narrow joints
• Replace torn vent screens rather than patch them
• Use a rigid cover or sealed filler for large openings

What are the common mistakes?

The common mistakes are sealing without finding the gap, using the wrong material for the joint, painting over caulk before it has cured, and sealing a point from outside only without checking from inside. Each of these leaves a path open.

A homeowner who caulks the visible crack and stops has often missed a gap behind a trim board or at a service entry. The light test from inside finds those, and it is the step most often skipped. A seal that looks finished from outside may still let light through at the back.

Painting over a caulk too soon can prevent it from bonding, and the failure is not visible until the next autumn. A homeowner should let the caulk cure as the label directs before painting, and should check it after the first winter.

• Sealing the visible crack and missing the one behind it
• Using the wrong material for the joint
• Painting over uncured caulk
• Skipping the inside light test

How do you check the work?

Check the work with the light test from inside at each marked point, then recheck after the first winter. A seal that lets light through is not finished, and a seal that has failed over the winter is reset before the next autumn.

The light test is done in a darkened room with the light held against the sealed point on the outside, or with the light inside and a second person checking from outside. Any line of light means the seal is incomplete. The homeowner should note the point and repeat the seal.

The recheck after winter follows the same steps, and the record of the first season is the list. A homeowner who keeps the list in a notes app or on a sheet inside a cupboard has a plan for the next year without starting again.

• Light test from inside at each point
• Reseal any point that lets light through
• Recheck after the first winter
• Keep the list for the next autumn

When should a homeowner call a technician instead?

A homeowner should call a technician when the gaps are high, numerous, or in a wall void, or when the sealing is for a building that will be inspected or rented. The technician adds the survey, the record and the licensed work that a homeowner's own repair does not.

A ladder job at the eaves, a gap that is behind a wall, or a building with many points is a reason to call a technician. The technician also records the work and gives a survey the homeowner can keep, and that record is useful for a rental or a commercial premises.

A homeowner who prefers to do the work should still have the survey done or check it against this guide, and should ask a technician to check the light test if the seal is in doubt. Any pest work that involves a pesticide is a licensed job, and the DATCP check applies to it.

• High, numerous or hidden gaps
• A rental or commercial building that needs a record
• A pesticide step, which is a licensed job

How do you work with a technician on the survey?

Walk the survey with the technician, point out the gaps you have seen, and ask for the reason each gap is sealed the way it is. A homeowner who understands the choice can check the work later.

The best survey is one where the homeowner walks alongside the technician. The homeowner knows where the activity was seen, and the technician knows what a gap looks like and which material it needs. Together they find more gaps than either would alone, and the homeowner learns where the building is most open.

Ask the technician to show the light test from inside at one or two points. Seeing a line of light at a frame makes the method clear, and the homeowner can then repeat the test on the next season's check without help.

• Walk the survey together
• Point out the sightings you have seen
• Ask for the reason each material is chosen
• Watch the light test done at one or two points

How do you plan the work over more than one day?

A sealing job can be split into two visits: the outside survey and sealing first, then the inside checks and any points that need a second look. The split lets materials cure before the light test is repeated.

Some sealing materials need time to cure before they can be tested, and a light test on a fresh caulk line may show a false gap. A two-visit plan lets the outside work finish, the caulk set, and the inside checks follow. The homeowner should agree the dates in advance.

The second visit also picks up any point that was not reached on the first, such as a gap behind a fixed panel or at a height that needed a different ladder. The report marks those points, and the second visit closes them.

• Outside survey and sealing first
• Let caulk cure before the light test
• Second visit for points not reached
• Agree the dates in advance