
MAP Quality Fencing & Decks
Composite Decking Installation in LaSalle and Peru, IL
4.9 ★★★★★ 233 Google reviews across Peru and Morris
A deck surface that does not get sanded, stained or sealed. Build it once and spend the summers on it instead of maintaining it.



Why people switch
The Deck Is Supposed to Be Where You Relax
A wood deck asks for a weekend every couple of years. Sand it, wash it, wait for it to dry, then stain it and hope it does not rain. Miss a cycle and the boards start going gray and rough.
Composite takes that off the calendar entirely. A hose in spring and the occasional sweep is the whole maintenance schedule, and the boards look the same in year eight as year one.

What you are choosing between
Six Decisions That Set What a Composite Deck Costs
Square footage is only part of it. These six change the number more than another fifty square feet will.
- Capped or Uncapped BoardsCapped boards have a protective shell bonded to the surface, which is what resists fading and staining. Uncapped costs less and does not hold up the same way.
- Board Color and GrainGrays, browns and multi tone boards with a wood grain texture pressed in. The color is part of the order, so it is decided up front.
- Height Off GradeA ground level deck and a deck that needs stairs and a railing system are very different builds. Height drives cost more than area does.
- Railing SystemComposite, aluminum or cable rail. Cable keeps the view, composite matches the boards, aluminum sits in between on price.
- Hidden FastenersClips that hold the boards from the side so there are no screw heads on the surface. Standard on most of what we build.
- Under Deck DrainageA system like RainEscape keeps the space under a raised deck dry, which turns it into usable space instead of storage.
What actually matters
The Frame Decides How Long the Deck Lasts
Composite boards will outlast the structure underneath them if that structure was built badly. The surface is what you see, but the joists, the ledger and the footings are what fail first.
- Flashing behind the ledger board. Water getting in where the deck meets the house is the most common cause of deck failure there is.
- Footings below the frost line. Shallow footings heave when the ground freezes, and a heaved deck pulls at the house.
- Joist spacing rated for the board. Composite needs closer spacing than wood or it flexes underfoot. Spacing gets set by the board we are installing.
Composite decks we have built
Composite Decks Around LaSalle, Peru and Grundy County
Pick a category to see more. Click any photo to open it full size.













The plan
How a Composite Deck Build Actually Runs
Most builds are a week on site once the permit is in hand, depending on size and weather.
Walk the Yard and Price It
We look at the footprint, the height off grade, where the stairs land and where the afternoon sun hits. Board and railing samples come with us.
Design, Permit and Board Order
The plan gets drawn, the village permit gets pulled, and the boards go on order in your color once the layout is settled.
Footings, Frame and Ledger
Footings below the frost line, then the frame, then the ledger flashed properly where it meets the house. This is the part nobody sees and everything depends on.
Boards, Rail and Walkthrough
Decking goes down on hidden fasteners, railing and stairs go on, and the manufacturer warranty paperwork comes with us when we leave.
Build the Deck You Drew. Pay Over Time.
Composite costs more up front than wood and nothing after. 0% financing closes that gap so you are not choosing the cheaper surface to hit a number.
Reviews from our clients
What Homeowners Say About Their Composite Deck
Illinois Valley4.9★★★★★204 Google reviews
Grundy County5.0★★★★★29 Google reviews
★★★★★
We hired MAP Quality to build a brand new composite deck and the finished product exceeded our expectations. Their communication was excellent and the crew was respectful of our property throughout.
Christopher Quinby, Morris
★★★★★
Matt and his crew were terrific. Quick, clean, and the communication was top notch from the first call.
Andrea Brannon, Peru
★★★★★
I cannot recommend MAP Quality enough. They turned our back upper deck into a beautiful oasis straight out of the movies.
Melyssa Kotecki
★★★★★
My dream deck turned out great. Matthew was so helpful in the planning process, really listening to my ideas.
Cari Lynn
★★★★★
Matthew was wonderful from start to finish. He explained all of our options for our new deck and was always available to answer my many questions.
Dawn Arjes
Common questions
Composite Decking Questions from LaSalle County Homeowners
How much does a composite deck cost in LaSalle or Peru?
Square footage, height off grade, stair count and railing system set the number. A ground level deck and a raised deck with stairs and cable rail are very different builds. We measure and put one number in writing.
Does composite get hot in the sun?
Darker boards do, the same as any dark surface. Lighter grays and browns stay noticeably cooler. If the deck gets full afternoon sun we will steer you toward a lighter board.
Will it fade or stain?
Capped boards resist both and carry a manufacturer warranty covering it. Uncapped boards do fade, which is the main reason we do not recommend them.
Can you build over my existing deck frame?
Sometimes. It depends on the joist spacing and the condition of the frame and ledger. We check before quoting and tell you honestly if the frame needs replacing.
How long does it take?
Most residential decks are framed and finished within a week on site, once the permit is in hand and the boards have arrived.
Is composite the same thing as Trex?
Trex is one brand of composite decking. All Trex is composite, but not all composite is Trex. We install several brands and will tell you which one your quote is based on.
Get started
Get a Written Price on Your Composite Deck
Tell us roughly the size and where it goes. We come out, walk the yard, bring board samples and give you one written price.
Call or text us(815) 579-2435
mapqualityfencing@gmail.com
