Without an under-deck drainage system, rainwater drips through the decking boards, making the space below wet and unusable. Mitchell Construction Custom Decks is the trusted underdeck waterproofing contractor in Chicago, IL, installing TimberTech DrySpace, an engineered system that channels moisture away from the structure and creates a dry, finished space below your deck.
As a TrexPro Platinum builder and NADRA Ambassador serving the Chicago suburbs since 1978, we handle dryspace installation in Chicago, IL, on both new builds and existing decks.
What Is TimberTech DrySpace?
DrySpace is a solid extruded vinyl drainage system that attaches to your deck joists and channels water away from the home through interlocking V-panels pitched toward a perimeter gutter and downspout.
- Solid extruded vinyl for strength, durability, and weather resistance
- Compatible with 12-inch and 16-inch on-center joist spacing
- Available in Bone and White finishes
- Installs on new decks or retrofits to most existing decks
TimberTech & AZEK DrySpace Installation
Mitchell Construction is a certified TimberTech installer. TimberTech DrySpace and AZEK DrySpace are the same product line, and correct installation requires precise pitch, proper bracket placement, and clean drainage routing.
- Ledger F-brackets and combo brackets installed to the correct pitch
- V-panels snapped into brackets and trimmed to fit the joist bay
- Gutter and downspout integration available to direct water away from the foundation
- Every installation follows TimberTech’s guidelines and local building codes
Underdeck Ceilings: A Finished Look Below
A DrySpace system handles drainage. An under deck ceiling installation in Chicago Suburbs, IL, adds a finished soffit below, concealing the framing and creating a covered outdoor area beneath your deck.
- Conceals joists, brackets, and drainage components for a polished look
- Pairs with deck lighting for evening use
- Works with the existing DrySpace system without interfering with water management
- Compatible with new builds and existing elevated deck structures
Our Process
Get in Touch: Request a consultation online to discuss your deck’s layout and drainage needs.
Design and Plan: We assess your deck’s joist spacing, pitch requirements, and drainage path to determine the right configuration.
Installation: Our team installs DrySpace panels, brackets, and any gutter or downspout components per the manufacturer’s specifications and local codes.
Final Walkthrough: We review every detail with you before the project closes.
Warranties and Financing
- 10-Year Labor Warranty on structural workmanship
- 25-Year Limited Warranty on TimberTech DrySpace product
- No Monthly Interest If Paid In Full Within 18 Months for qualified homeowners on approved credit
The Space Below Your Deck Deserves Better
Water management is only half the project. A finished underdeck ceiling is what turns a drainage system into a space worth spending time in. Schedule your consultation, and we will walk you through every option.
Frequently Asked Questions
What is a DrySpace under-deck drainage system?
DrySpace is a TimberTech/AZEK product that attaches to the underside of your deck joists and channels rainwater away from the home using interlocking V-panels, directing water to a perimeter gutter or downspout.
Can DrySpace be installed on an existing deck?
Yes. DrySpace can be retrofitted to most existing elevated decks with 12- or 16-inch on-center joist spacing. We confirm compatibility during the consultation.
What is the difference between a DrySpace installation and an underdeck ceiling?
DrySpace handles drainage by channeling water away from the space below your deck. An underdeck ceiling adds a finished soffit below the DrySpace system, concealing the framing. Both can be combined into one project.
Do you install gutters and downspouts with DrySpace?
Yes. An optional gutter and downspout system can be integrated to direct collected water away from the foundation. We determine the best drainage path during the design phase.
What warranty comes with TimberTech DrySpace?
TimberTech DrySpace carries a 25-year limited warranty for residential applications, backed by our 10-Year Labor Warranty on workmanship.
Do you serve the Chicago suburbs for DrySpace installation?
Yes. We install DrySpace, deck waterproofing systems, and underdeck ceilings throughout the Chicago suburbs, including Frankfort, Orland Park, Tinley Park, Homer Glen, Mokena, Naperville, and surrounding communities.