rainscreen

musingsheader image

Things You Do Not Need

And a few things you do

Posted on Feb 9 2018 by Martin Holladay
prime

Houses are changing. Anyone buying a new home in 2018 expects the home to be quite different from one built in 1918, of course.

What “new features” is the typical buyer of a new home seeking out? It depends. Some buyers are looking for a foyer with a 20-foot ceiling and a master bathroom with a big Jacuzzi. Others, including the typical GBAGreenBuildingAdvisor.com reader, are looking for low energy bills and superior indoor air quality.


Tags: , , , , , , , , , , , , ,

Image Credits:

  1. Image #1: Midwest Construction

QA-spotlightheader image

How to Vent a Rainscreen

Should a rainscreen be integrated with soffit vents or vented only on the bottom?

Posted on Sep 18 2017 by Scott Gibson

A vented rainscreenConstruction detail appropriate for all but the driest climates to prevent moisture entry and to extend the life of siding and sheathing materials; most commonly produced by installing thin strapping to hold the siding away from the sheathing by a quarter-inch to three-quarters of an inch. — an air gap behind the siding — has become a standard detail in many new houses. It helps remove moisture that works its way through the siding, and in the process helps siding last longer. It's the "vented" part of this equation that has Gerald Pehl thinking.

"I've got an assembly design for a vented rainscreen, and it will be held continuous to the soffit spaces, which then vent through to the attic ridge vent via conventional vent chutes between the rafters," Pehl says in a comment posted in the Q&A forum at GBAGreenBuildingAdvisor.com.


Tags: , , ,

Image Credits:

  1. Fine Homebuilding

QA-spotlightheader image

Installing Lap Siding Over Foam

Choosing the right furring strips is key to preserving a warranty for this engineered wood siding

Posted on Jul 10 2017 by Scott Gibson

William Costello is building a new house in southwest Virginia that will be framed with 2x6s and will include up to 2 inches of exterior rigid foam insulation. He plans on installing 3/4-inch thick plywood furring strips on top of the exterior foam, and then will side the house with LP SmartSide lap siding designed specifically for houses with 24-inch on-center framing.

It all sounded straightforward enough until Costello took a close look at the installation instructions from LP Building Products.


Tags: , , ,

Image Credits:

  1. Image #1: Louisiana-Pacific Corp.
  2. Images #2 and #3: International Code Council

guest-blogsheader image

Airport House: Walls and Insulation

An exterior layer or rigid foam insulation will reduce thermal bridging

Posted on Mar 9 2017 by Reid Baldwin

Editor’s note: This is the one of a series of guest blogs by Reid Baldwin about the construction of his house in Linden, Michigan. The first blog in the series was titled Energy Efficiency and Garage Space for an Airplane.


Tags: , , , , , ,

Image Credits:

  1. All images: Reid Baldwin

green-building-newsheader image

Canadian Firm Develops a New Rainscreen Product

Ventgrid can be used to provide an air space behind siding, under roofing, and between a concrete slab and flooring

Posted on Dec 21 2016 by Scott Gibson

Builders who like to include a vented rainscreenConstruction detail appropriate for all but the driest climates to prevent moisture entry and to extend the life of siding and sheathing materials; most commonly produced by installing thin strapping to hold the siding away from the sheathing by a quarter-inch to three-quarters of an inch. in exterior walls can nail up wood or plastic furring strips before installing the siding, or use a plastic mesh such as Benjamin Obdyke's Cedar Breather under wood shingles on walls or the roof.

Now they have another choice, a plastic grid called Ventgrid that can be used to create a gap under siding, roofing and flooring. First introduced in eastern Canada four years ago, it's become available in the U.S. within the last couple of months.


Tags: , , ,

guest-blogsheader image

Break It or Lose It

Thermal bridging in rainscreen systems

Posted on Nov 24 2016 by Andrea Love

Over the past 20 years, the building industry has experienced renewed interest in reducing the energy demand of buildings. At the building code level, groups such as the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAEAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE). International organization dedicated to the advancement of heating, ventilation, air conditioning, and refrigeration through research, standards writing, publishing, and continuing education. Membership is open to anyone in the HVAC&R field; the organization has about 50,000 members. ) have been steadily raising the bar on performance criteria for building envelopes and systems. Designers have been challenged to find and implement technologies and solutions that can practically and economically affect the energy demands of our buildings.


Tags: , ,

Image Credits:

  1. All illustrations: Andrea Love

green-building-newsheader image

An Alternative to Wood Window Bucks

On walls with exterior insulation or a rainscreen, these reinforced EPS bucks may outperform wood or plywood bucks

Posted on Apr 4 2016 by Scott Gibson

A Pennsylvania company has developed an alternative to wood window bucks, claiming the coated polystyrene bucks offer better thermal insulation, a more effective water and air seal, and better long-term performance.

Window and door bucks are used when exterior insulation, such as rigid foam, or a rainscreenConstruction detail appropriate for all but the driest climates to prevent moisture entry and to extend the life of siding and sheathing materials; most commonly produced by installing thin strapping to hold the siding away from the sheathing by a quarter-inch to three-quarters of an inch. is installed over sheathingMaterial, usually plywood or oriented strand board (OSB), but sometimes wooden boards, installed on the exterior of wall studs, rafters, or roof trusses; siding or roofing installed on the sheathing—sometimes over strapping to create a rainscreen. on exterior walls. A buck (more properly called a Rough Opening Extension Support Element, or ROESE) ensures the window or door will be aligned correctly with the insulation or rainscreen.


Tags: , , , , ,

Image Credits:

  1. Photos: BRINC Building Products

guest-blogsheader image

Zip Sheathing Tips

Specify the right roofing underlayment, install flashing at the base of your walls, and include a rainscreen gap

Posted on Jan 26 2015 by Matt Risinger

This past year I had the opportunity to build a SIP(SIP) Building panel usually made of oriented strand board (OSB) skins surrounding a core of expanded polystyrene (EPS) foam insulation. SIPs can be erected very quickly with a crane to create an energy-efficient, sturdy home. and timber-frame house designed by architects Aamodt & Plumb and built in conjunction with Bensonwood Homes, the famous timber-frame company in New Hampshire. (Side note: I first heard of Bensonwood while watching This Old House in high school. It’s a dream come true to build a house with their timber/SIP package.)

Bensonwood has been using Zip System sheathingMaterial, usually plywood or oriented strand board (OSB), but sometimes wooden boards, installed on the exterior of wall studs, rafters, or roof trusses; siding or roofing installed on the sheathing—sometimes over strapping to create a rainscreen. in their SIPs (Structural Insulated Panels) for a few years now, and has really liked them for several reasons.


Tags: , , ,

Image Credits:

  1. All photos: Matt Risinger

musingsheader image

Two New Exterior Insulation Products for Walls

InSoFast sells EPS foam panels with integral plastic furring strips, while Tyvek has introduced a squishy quilted housewrap

Posted on Jan 31 2014 by Martin Holladay

Exterior wall insulation? That usually means rigid foam and furring strips — although occasionally, it means mineral wool insulation and furring strips.

But there are other options. Two new products offer builders new ways to keep their wall sheathingMaterial, usually plywood or oriented strand board (OSB), but sometimes wooden boards, installed on the exterior of wall studs, rafters, or roof trusses; siding or roofing installed on the sheathing—sometimes over strapping to create a rainscreen. warm.


Tags: , , , , , , , , , ,

Image Credits:

  1. InSoFast
  2. Martin Holladay
  3. Mike Guertin

green-building-curmudgeonheader image

Sticking With Spray Foam for My Renovation

I wanted to try a different type of insulation, but it just didn’t make sense to switch horses in midstream

Posted on Dec 10 2013 by Carl Seville

Over the past dozen or so years my opinion on spray foam insulation has evolved from being a strong advocate to being slightly skeptical.

I have come to the conclusion that any well-designed new building can be insulated with any properly installed insulation. When it comes to renovations, however, spray foam often has some distinct advantages.


Tags: , , , , , ,

Image Credits:

  1. Carl Seville

Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!

Syndicate content