HydroGap® Drainable Housewrap



  • Eliminates excess moisture and protects against mold and rot
  • 1mm spacers creates a drainage gap between sheathing and cladding
  • Removes 100x more bulk water than standard housewraps
  • Two non-woven layers surround the water hold-out film providing superior strength and protection from surfactants and damage during installation

Works Well Behind:

  • Fiber Cement
  • Wood (including shingles & shakes)
  • Vinyl & Insulated Vinyl
  • Manufactured Stone
  • Stucco
  • Metal

Product Specs:

  • Thickness: 1mm
  • Width: 5 ft.
  • Perm: 16
  • UV Exposure: 120 days
  • Length: 100 ft.
  • Warranty: 15 Year product / 20 Year system 
  • Fire Rating: Class A
Benjamin Obdyke Incorporated (“Benjamin Obdyke”), warrants that HydroGap® Drainable Housewrap and / or HydroFlash, when installed in accordance with Benjamin Obdyke’s published installation instructions, is free from manufacturing defects for fifteen (15) years from the date of purchase.

Subject to the following Product specific terms and conditions, Benjamin Obdyke warrants that for a period of twenty (20) years from the date of purchase, Products, identified below, when installed in strict accordance with the applicable Benjamin Obdyke Installation instructions, in a properly constructed and designed wall system, following the applicable building codes and accepted industry standards for each type of structure.
HydroGap Installation Instructions:
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5 out of 5 (based on 16 ratings)
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Hydrogap Housewrap

Good stuff. The 5' tall roll was easy to manage. This housewrap doesn't tear like others I've used in the past. Will buy again when I reside the rest of the house.
Posted by Holden Sorem, 21st Aug 2020

Hydrogap housewrap

This product has been popping up more and more on commercial properties. Engineers are requesting this and the guys in the field love it. Super easy to install, and works great.
Posted by Brandon, 28th Jan 2020

Exceptionally Easy Product To Work With

I have just finished wrapping an outdoor storage shed that will see extremes of heat , cold, rain, snow, and ice. Ultimately cedar clapboards and trim will be applied. Very easy to understand instructions from the website and easy to cut and install made the product very desirable for a homeowner such as myself. Glad that it can be oriented either horizontally or vertically for the same effect. The FineHomebuilding article about building wraps and the reasonable price from the manufacturer's website sold me on this product.
Posted by undefined, 20th Jun 2019

Great wrap!

I feel like I'm providing my customers an upgraded product by using Hydrogap over other types of housewraps. It is more durable, can get wet without crinkling, 5' rolls make for good coverage, their tape sticks well to it. Definitely going to keep using it.
Posted by Aaron, 7th Apr 2019


I like that the material is more robust than the typical "white" wrap and the 1 mm gap relieves any water tension that might otherwise allow water penetration into the building. The 5' roll allows me to install by myself.
Posted by Gene G., 11th Aug 2018

A Must Have...

Very pleased with HydroGap; easy to install; not as flimsy as other house wraps on the market; used under vertical tongue and groove cedar siding
Posted by Joseph Posillico, 19th Jul 2018

Great product at this price point.

Easy to install, seems to work well so far. Nice product at a price point lower than the HomeSlicker Plus Typar.
Posted by Micah, 27th Sep 2017

Better than the rest

The obdyke hydro gap has impressed all the subs who have come to our job with its unique draining configuration and its extra tactile feel and strength.
Posted by Vernon winter, 21st Jul 2017

Form and Function

High quality of manufacture, Five foot width is nice to work with, not bulky so does not interfere with trimming. I used this under fiber cement 4x8 siding. Very professional product. As other's, tapes don't stick well. Perhaps not a big deal and staples may tear out a bit easy but overall I'm glad I discovered and used this material. Also, the staff are VERY helpful and knowledgeable.
Posted by Markie, 5th Jul 2017