Lowering Emissivity of Concrete Roof Tile’s Underside Cuts Down Heat Entry to the Building

Researchers from the Guilin University of Technology and the Michigan Technological University used greenTEG’s gSKIN®-XP heat flux sensors to show how lowering the emissivity at the underside of concrete roof tiles can curtail heat entries into houses in summer.

In Southern China, most buildings use a double-skin roof to reduce heat entry in summer. The outmost layer often consists of concrete roof tiles due to their resistance against hail and wind. However, dust deposits and algae growth darken those tiles over time, which leads to an increased heat entry into the building.

In the study, the emissivity of the underside of the concrete roof tiles was lowered by coating it with a specific paint. Six gSKIN®-XP heat flux sensors were used to measure the heat flux through the roof under tiles with different emissivity values. The study confirmed that a concrete tile with a lower emissivity has a lower roof deck temperature and propagates less amount of heat to the building interior.

The research contributes to higher energy efficiency of buildings and increased comfort for the inhabitants, and we’re pleased to be a part of it.

View full publication

More news

greenTEG receives the Seal of Excellence from the EU Horizon 2020 program.

Read more

New method for the thermal characterization of window insulation materials developed

Read more

So messen Sie den U-Wert von Fenstern: Ein Beispiel

Read more

How to measure U-Values of Windows: An example

Read more

greenTEG has a new office address

Read more

Measuring a breathing wall`s effectiveness and dynamic behaviour

Read more

Energieberater ENVISYS testet das gO Mess-System

Read more

Reducing Energy Losses in Hot Climates – Two Cases from the Middle East

Read more
Read all