Simple Saver System®

Products / Insulation Systems / Simple Saver System®

Items To Consider

Thermal Design has put together a variety of items to consider when installing the Simple Saver System in metal building roof and walls.

These items will:
1. Drastically speed up installation process
2. Organize sub-contractors
3. Provide a more effective overall building thermal envelope

Common Hanging Methods

Common Hanging Methods in municipal garage Virtually anything can be attached to the underside of the purlins with negligible effect on the vapor retarder. Common fasteners and hangers are available locally and from Thermal Design. Below are examples of standard attachment methods and common hangers that may be used with the Simple Saver System eliminating the need to cut or compromise the Syseal fabric integrity. Compression seals and caulk type sealants may  be used with any hanger type. Check with  building manufacturer for limitations as well as building codes for applicable regulations. Contact us 800-255-0776 for additional hanger details and recommendations for your application.

Common Items Include:

  • HVAC & Ducting
  • Sprinklers & Signage
  • Fans & Lights
  • Piping & Conduit
  • Suspended Heaters

Common Fasteners, Hangers and Methods Include:

Common Hanging Methods


Download Common Fasteners, Hangers and Methods (PDF)

Scheduling Subcontractors

Mechanical, Electrical, Plumbing
Encourage your MEPs to design and install hanging items using the bottom plane of the purlins as a guide vs. running piping, conduit, junction boxes, duct work, etc. within and throughout the purlin cavity. Schedule these trades only after the Simple Saver System® has been installed. Experienced and knowledgeable metal building contractors find that discussing these fastening alternatives with their subcontractors a valuable, but often overlooked opportunity, to help stay on schedule and reduce subcontractor labor and material cost. Retrofitting with the Simple Saver System?

Simple Saver System with lights, pipes, conduit installed

Considering your subcontractors have access to the steel building drawings, there should be no mystery on placement and spacing of the metal building’s secondary framing which are commonly used to hang a variety of items. Once the Simple Saver System® is installed, essentially anyone can visualize the purlins/joists location and spacing by simply looking at the fastening patterns of the insulation system.

Proper planning and responsible
subcontractor understanding will save everyone time and money.

Brace Clip

Rafter brace clip installed and sealed

Bracing is supplied with your metal building and is typically bolted on either ends to the rafter and angles to the horizontal web of the purlin, protruding through the bottom plane of the purlin. In order to preserve the integrity of the vapor retarder, care must be taken to properly seal any cuts and penetrations through the Syseal® fabric. There are a variety of different connection options available from the building manufacturer; each represents a different sealing technique.

Brace Clips options

90 degree rafter brace clipBrace Clips
Thermal Design recommends a 90º rafter brace clip bolted to the rafter brace and then fastened to the bottom of the purlin after the vapor retarder is properly placed, but only when approved by the building manufacturer and/or structural engineer. The design of the rafter brace attachment to the bottom plane of the purlin speeds installation of the system and provides a reliable seal. Thermal Design brace clips are available upon request.


  • Preserves Vapor Retarder
  • Provides a Reliable Seal
  • Increased Installation Productivity


Standardized Purlin Spacing

72" 69" to 72"
60" 57" to 60"
48" 45" to 48"
36" 33" to 36"
30" 27" to 30"
24" 21" to 24"

Pre-engineered metal buildings are designed to meet various load, wind and seismic conditions depending on location and use of the building, however you can improve productivity rates and reduce material waste by requesting default purlin spaces to match the standard widths of today's unfaced metal building insulation, where appropriate. Energy codes and fuel costs require the use of thick, uncompressed insulation systems that fit between the roof purlins. Non-standard purlin spaces cause significant and unnecessary time and material waste required to cut wider rolls to fit between the purlins. Standardizing the purlin spacing to match standard widths of fiberglass insulation blanket will minimize waste and dramatically improve the quality and thermal performance. Ideal purlin spacings would be approximately 1" narrower than the insulation widths for a tight fit.

Thermal Design provides custom made insulation widths upon special request, however by simply specifying or requesting standardized purlin spaces from the building manufacturer, contractors will:

  • Increase Installation Productivity
  • Reduce Insulation Waste
  • Shorten Lead Times for Delivery

Download Purlin Spacing Request (PDF)

zoomed in view of base channel detailBase Channel

When installing a Simple Saver wall system, some type of base angle at interior wall line is normally required for full thickness insulation as well as properly seal and mechanical attachment. Thermal Design does not provide a base channel however is typically provided by the building or components manufacturer upon request. When wall systems are included, ask manufacturer to include 'C' girts at the foundation. Depending on the building's application and use, alternative base angle solutions would also include: metal angle, wood angle, etc.

Framed Opening

When utilizing Thermal Design's high efficiency EnergyCraft HVAC units, remember to request appropriate framed wall openings from your metal building manufacturer. Installation of unique 'through-the-wall' units provide amazing fast installation for metal building contractors. Your building manufacturer's standard framed opening package with matching jamb and header trim is recommended for installation in new construction. We assist with planning the location(s) while providing installation options and instructions. Alternatively, Thermal Design may provide wall-mount framing kits suitable for your needs. Contact Thermal Design at 800-255-0776 for details.

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Installing Simple Saver System
Benefits of the Simple Saver System
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