New H1 Calculation Service

 

At Pink® Batts®, we pride ourselves on quality, service, and support. That is why we have partnered with the market leading H1 calculation service Design Navigator to offer a comprehensive H1 calculator, that addresses not only H1 but also E3. Our comprehensive H1 report has clear graphics that show the heat loss data broken down by element; being Skylights, Roof, Windows and Doors, Walls, and the Floor. The report visually flags target areas where the heat loss is above the reference building and needs to be addressed.

 

It also includes a floor plan showing where the perimeter insulation has been used to ensure a compliant solution, ensuring the installation reflects calculation.

 

Our comprehensive H1 report further includes a breakdown of the assembly for each element, to ensure it reflects the design.

Like many things in life, you get what you pay for and if something is free it often comes at a cost down the line. That is why we have decided to charge a nominal fee of $150 plus GT for our comprehensive calculation report.

This cost reflects the cost of the Intellectual Property behind the software, which has many years of development, as well as the expertise required to make informed decisions on product selection, balancing compliance, performance, and cost. This expertise extends to ensuring the consideration of other aspects of the Building Code including ventilation pathways as per NZS 4246, where we do not rely on the installer to modify the product to ensure compliance but rather specify solutions developed for New Zealand construction methods to ensure compliance and long term performance.

The turnaround time for a comprehensive H1 report is currently 1 week, depending on the clarity of the information provided and the degree of consultation required to achieve compliance.

To request your H1 report please email technicalsupport@comfortech.co.nz

Edge Compression R-value Calculator

Comfortech® has worked with Design Navigator to develop an Edge Compression R-Value Calculator. This calculator allows us to extrapolate the product R-value across the last 500mm of the ceiling or roof perimeter, under compression to ensure you will meet the required R3.3 construction R-value under the 5th Edition of H1.

Single layer solution with insulation guard

Double layer solution with insulation guard

Note: The calculation assumes that the bottom of the insulation is flush with the top of the top plate across the whole width. In reality there may be a gap between the top of the lining and the top of the top plate. Therefore, the insulation will be less compressed as calculated in this spreadsheet. That calculation is therefore conservative.

Choose from the Pink® Superbatts® product range

Choose from the Pink® Superbatts® product range.

> Single layer diagram
> Double layer diagram
> Single layer diagram > Double layer diagram
We have carried out extensive testing to quantify the performance of the Pink® Superbatts® range under compression; this enables us to deliver an industry leading solution that is proven to perform.

The slope of the roof in degrees

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> Double layer diagram
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°

The perimeter width is the width of the insulation segment, i.e. it is counted from the outer edge of the insulation (not the wall framing).

> Single layer diagram
> Double layer diagram
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mm

Thickness of the rafters

> Single layer diagram
> Double layer diagram
> Single layer diagram > Double layer diagram

The rise of the rafters. By default, the rafters would sit directly on top of the top plate.

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> Double layer diagram
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mm

Has a roll panel been included.

> Single layer diagram
> Double layer diagram
> Single layer diagram > Double layer diagram
Under NZS4246, a 25mm gap must be maintained between the underside of the roof underlay and the top of the insulation

The insulation is placed halfway across the top plate. This value is the offset of the insulation from the outer side of the top plate.

> Single layer diagram
> Double layer diagram
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Results:
Not Compliant
Perimeter Insulation Only Average R-Value
Increase heel height to reduce compression
The compression is over too large an area; increase heel height to reduce compression area
Roof Slope
Degree
Perimeter width
mm
Total Height at Heel
mm
% max compression
Minimum R value
Truss chord height
mm
Raised Heel Height
mm
Include Roll Panel Vent
Uncompressed insulation thickness
mm
Uncompressed insulation R value
% R-value Reduction per % compression

Download our resources

We've got all your H1 needs covered. Download our H1 resources below. 

BRANZ Publications

With decades of research into thermal insulation, structural strength, internal moisture and related topics, BRANZ is well placed to give practical advice around H1 compliance. Download their resources below.