A Warrenville deck that stays level and solid, built on footings below the frost line with posts kept up out of the wet soil.
We build new decks in treated lumber or composite and repair the ones already standing, from the footings up to the railing caps. A deck is only as steady as what holds it up, so new posts sit on concrete footings dug below the frost line, on metal post bases that keep the end grain off the concrete. Stairs, landings and railings are built to current code. Permits and inspections come with nearly every new deck, and we pull them.
We cover Warrenville off I-88 and Route 59, and Butterfield Road and Winfield Road take us across town. The West Branch of the DuPage River runs through this part of DuPage County, and if your yard sits low or holds water after a storm, that matters for a deck. Wet ground heaves in winter and keeps the bottoms of posts and stair stringers damp most of the year. On a repair we dig around the worst posts to see what they stand on, and on a new build we size the footings and set the stair landing on a pad that stays above the wet spot.

Holes dug below the frost line and poured so the deck does not heave or settle from one season to the next.
Posts set on metal bases above the concrete, so the end grain is not drawing water up from the ground.
Where the deck meets the house, the ledger is flashed and fastened with proper bolts, and an existing ledger that is wrong gets fixed first.
Stairs with even risers and a solid landing at the bottom, built to current code with a handrail you can grip.
Treated lumber costs less and needs sealing. Composite costs more up front and needs little upkeep.
Front porch steps, railings and columns rebuilt or repaired to suit the rest of the house.
The first visit is free: we measure, look at the house wall where the ledger goes and see how the yard drains. You get a written estimate that lists the footings, framing, decking, stairs and railings, along with the permit work. If digging turns up something the estimate did not cover, like an old buried footing in the way, we price it in writing and wait for your okay. The schedule follows the permit approval and the inspection dates, and at the end we walk the finished deck with you.
Call or text (815) 585-1750 to set up a free on-site estimate, and we will put the whole job in writing, footings to railings.
Call or text (815) 585-1750
Email matt@onitcc.com