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Moisture Barriers for Building Enclosures

Moisture management is the number one challenge in any building construction — and barricading this moisture from above is the most important part. Problems caused by moisture build-up or inadequate ventilation in the roof and attic can quickly spread to the rest of the building. That's why Spycor Building Products has an assortment of Dorken DELTA roof underlayment systems that improve water retention, drainage and airflow as needed. Your home or office building will be more comfortable and safer with professional-quality moisture control.

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  • Cedar Roof

    The CedAir-Mat® ventilation mat from Advanced Building Products is one product we have available for cedar roofs. It has an open mesh design that is lightweight, flexible and easy to handle. This 90 percent open mesh design promotes airflow by creating a cavity that allows airflow between the roof's metal panels and sheathing, in all directions.

  • Garden Roof Systems

    Dörken, global leaders in moisture protection, has three garden roof systems that work together to support and protect rooftop gardens. Their DELTA®-FLORAXX, DELTA-ROOT BARRIER and DELTA-BIOTOP meet the unique requirements of garden roofs, by providing both water retention and water drainage, to enhance the performance and extend the lifespan of both the garden and the roof. They also prevent leakage. If you're planning to build a green roof, where to buy the best products may be a major concern. Look no further! We have the best garden roof systems at affordable prices.

  • Pitched Roof Underlayment

    Are you planning a new building construction or roof remodeling job? Don't forget the waterproofing and moisture management! At Spycor Building Products, we offer the highest quality underlayment systems for pitched roofs. Dörken DELTA® systems are the premiere choice for roof protection. We have their DELTA-ROOF, DELTA-FOXX, DELTA-MAXX and DELTA-VENT and DELTA-VENT SA product lines, which feature technologically advanced materials and designs that protect roofs from rainwater, snow, wind and dust, while allowing vapor permeability and ventilation for increased lifespan and lower energy costs.

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ABP AdvancedDrain ® Drainage Mat (0.25" x 39" x 135') 4 ABP AdvancedDrain ® fabric on 2 sides

  • Residential foundation walls
  • Balconies
  • Retaining Walls

Our Price: $510.83
ABP AdvancedDrain ® Drainage Mat (0.25" x 39" x 135') 1 Side ABP AdvancedDrain ® fabric on 1 side

  • FABRIC on 1 SIDE
  • Residential foundation walls
  • Balconies
  • Retaining Walls

Our Price: $414.18

  • Primary Waterproofing Layer

Delivered Price $1,385.73

DELTA-BIO TOP DELTA®-BIO TOP – Geotextile for Garden Roof Applications

  • Holds Growing Medium

Delivered Price $789.88
CedAir-Mat ventilation mat used in cedar roof construction CedAir-Mat

  • Cedar Roofing Ventilation
  • LEEDS Points
  • Light Weight - High Compression

Our Price: $184.95
DELTA®-ROOF has been designed for ventilated pitched roofs with sheathing boards. Its relatively water vapor permeability helps to prevent buckling of asphalt shingles caused by solar driven moisture that would usually cause the sheeting boards to swell a DELTA®-ROOF 4'-11" X 164'----- 804 Square Feet

  • Used for Vented Roofs
  • Completely Waterproof
  • Building Code Approved

Our Price: $429.38
Delta Foxx roofing underlayment by Cosella Dorken, The most advanced moisture management roof underlayment on the market. Cutting edge technology allows for extreme vapor permeability.
2-ply material that is waterproof with a vapor permeable di DELTA®-FOXX 4'-11" X 164'----- 804 Square Feet

  • Vapor Permeable
  • Completely Waterproof

Our Price: $699.00
Delta Maxx Titan underlayment by Cosella Dorken , The highly vapor permeable, reflective, watertight roof underlay with energy saving properties. Cool in the summer, warm in the winter.
High strength Polyester fabric with vapor permeable Polyur DELTA®-MAXX TITAN 4'-11" X 164'----- 804 Square Feet

  • High strength Polyester
  • Completely Waterproof
  • Energy Saving Properties

Our Price: $1,589.00
DELTA-TRELA Roofing Membrane by Cosella Dorken. The structured separating layer for ventilated and non-ventilated pitched roofs with metal covering for ultimate protection.
DELTA®-TRELA is a high end membrane, completely waterproof, highly water vapor pe DELTA®-TRELA 3'-3" X 98.6'----- 323 Square Feet

  • Pitched Roof
  • Metal Covered Roofs
  • Extremely Resistant

Our Price: $660.90

DELTA®-VENT S is a supertough, lightweight roofing underlay. The 3-layer, high strength spun-bonded PP breather membrane is water vapor permeable, while completely waterproof. A fabric layer on the lower side protects the membrane against damage (eg. roug DELTA®-VENT S 4'-11" X 164'----- 804 Square Feet

  • Ideal for non-vented roof
  • Completely Waterproof
  • Concrete, Clay, Slate

Our Price: $410.83
DELTA®-REFLEX is completely impermeable to water vapor. This highly effective barrier stops any vapor diffusion and thus helps to prevent wetting and damage of thermal insulation and the building enclosure throughout the lifetime of the structure. DELTA®-Reflex 4'-11" x 164'

  • 4 Ply
  • Vapor & Air Barrier

Our Price: $470.16
Cosella-Dorken DELTA-VENT SA DELTA®-VENT SA 4'-11" X 115'----- 565.1 Square Feet

  • Ideal for non-vented roof
  • Completely Waterproof
  • Concrete, Clay, Slate

Our Price: $809.12

Delta Foxx Plus by Dorken DELTA®-FOXX PLUS 4'-11" X 164'----- 804 Square Feet

  • Vapor Permeable
  • Completely Waterproof

Our Price: $799.28

Delta Poly Band for Delta Reflex DELTA®-POLY BAND (ROLL) 3.94" X 328'

  • Delta Roofing Accessory

Our Price: $55.95

Delta Flexx Band for roofing underlayment, Stretchable sealing tape for inner and outer connections to structural details. Material
Bitumen based adhesive combined with tough textile carrier. DELTA®-FLEXX BAND (ROLL) 3.94" x 32.8'

  • Delta System Accessory

Our Price: $80.11

Delta Multi Band for roofing underlayment General-purpose adhesive tape with convenient tearoff lines. Can be used with all indoor and outdoor sheets and membranes to join overlap seams and penetrations and repair tear damage.
Acrylic adhesive DELTA®-MULTI BAND 100 (ROLL)----- 3.9" x 82'

  • Delta Roofing Accessory

Our Price: $111.33

DELTA®-NAIL SEALING TAPE Roll tape  2.5" x 98.4' DELTA®-NAIL SEALING TAPE Roll tape 2.5" x 98.4'

  • Delta Roofing Accessory

Our Price: $93.45
Delta Multi Band 60 DELTA®-MULTI BAND 60 (ROLL)----- 2.5" x 82'

  • Delta Roofing Accessory

Our Price: $42.43

Benefits of Roof Underlays

Adding an underlayment improves quality of life in a number of ways. Increased ventilation will keep the roof and the building cooler and drier in the summer months. This prevents structural damage and lowers utility bills. Airflow also prevents steam build-up, ice dams, mold and other things caused by excessive moisture. If you live in areas with heavy rain or snow, a roof waterproofing system is a must to prevent water from leaking into the building. These systems even reduce noise so you can enjoy some peace and quiet.

Reduce Moisture for All Roofs

Our experts have picked out the best roof moisture management systems for every situation. We have pitched roof underlays such as the DELTA-ROOF for blocking water and the DELTA-FOXX for draining. The DELTA-TRELA metal roof underlayment will seal the area between the root and the sheathing so moisture can't collect underneath. If you have a cedar roof, the CedAir-Mat® provides superior ventilation via the cavity it creates beneath the shingles. We also have garden roof systems that can retain rainwater for refreshing your plants and then drain the excess away.

Leading Roof Moisture Solutions

Call or email Spycor Building Products if you're planning a roofing project. Our customer service team and technical staff can both assist you with anything you need to know about moisture management and finding the right products with free shipping and bulk discounts.