Seal gaps in siding and trim

Tom Hanks, owner, 24/7 Express Handyman Service · Updated September 2026

24/7 Express Handyman Service seals siding and trim gaps in Salt Lake, Park City and Heber. Up to 10% off annual energy bills is what ENERGY STAR says sealing air leaks and adding insulation can provide. (Seal and Insulate with ENERGY STAR | ENERGY STAR)

What exterior sealing costs

Salt Lake City & Millcreekfrom $205
Park City & Summit Countyfrom $225
Heber Valley & Wasatch Countyfrom $225

Exterior sealing in Salt Lake City & Millcreek starts at $205: the 2-hour minimum at $95/hour ($190) plus the $15 fuel surcharge, with no dispatch fee. Time past 2 hours is billed in 30-minute steps. Larger parts are billed at cost plus 25%.

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(801) 999-0827Text photos

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24/7 Express Handyman Service confirms the address, the zone rate and the dispatch fee, and takes a card, before rolling.

Quick answers

Why seal gaps in siding and trim?

Open joints let rain, snowmelt and drafts in behind the siding, where trapped water rots wood. Sealing also cuts air leaks; ENERGY STAR says sealing air leaks and adding insulation can save up to 10% on annual energy bills.

What gaps should not be caulked?

The bottom edges of lap siding and the weep gaps at the bottom of window trim should stay open so water that gets behind can drain out. Sealing those traps moisture. Seal vertical joints, trim-to-siding joints and holes around penetrations instead.

When is the best time to caulk exterior trim?

On a dry day in mild weather, when surfaces are clean and dry and temperatures are within the sealant label range. Caulk applied in freezing cold, in direct hot sun or on damp wood is more likely to fail early.

Freshly caulked and painted door trim meeting lap siding at an entry
Photo: David Schott from Redmond, Washington, USA, CC BY 2.0

What 24/7 Express Handyman Service does on site

How it works

  1. Gaps and failed caulk are found and photographed around the house.
  2. The sealing is priced in writing by area.
  3. Old caulk is removed, joints are cleaned and dried, then sealed and tooled.
  4. Referred out: siding replacement, soft or rotted areas behind the gap, and flashing tied into the roof.

When to stop and call

If wind-driven rain is getting behind siding or trim and showing up inside, call. 24/7 Express Handyman Service can seal the opening and check the wood behind it for rot.

What happens next

Every job 24/7 Express Handyman Service takes on is under $3,000 including labor, materials and any change orders (Utah Code §58-55-305); a change that would push a job over that line is referred to a licensed contractor, not written up as a second job. plumbing, electrical, HVAC, gas appliance / combustion system work is referred to a licensed trade.

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