What are HexiTherm™ Adhesives?
HexiTherm Adhesives are a family of products specifically
developed by Momentive to provide
superior heat performance for today’s engineered
wood applications. Utilizing state-of-the-art thermosetting
and emulsion technologies, HexiTherm products are thermally
stable under the most rigorous conditions.
Manufacturers of I-joists, glulam beams, finger-jointed
studs and engineered wood doors bonded with HexiTherm
adhesives can be confident in their products’ fire
resistance, and in many cases, their interchangeability with
solid sawn lumber under high heat.
How are HexiTherm Adhesives different from other products
on the market?
HexiTherm Adhesives meet or exceed the highest heat and
fire resistance standards in the wood products industry.
They are certified, for example, by the American Lumber
Standard Committee (ALSC) as Heat Resistant
Adhesives (HRAs) for finger-jointed stud applications.
They have also been tested and comply with specifications
for 45-, 60- and 90 minute fire-rated doors.
HexiTherm Adhesives are a family of products so manufacturers
have a broad range of technology options, from phenolic
and melamine-based chemistries for critical structural
applications to PVAs with high emulsied phenolic
content for fire doors and specialty applications.
Regardless of which product manufacturers choose, Momentive
offers extensive technical support capabilities to optimize
Why are HexiTherm Adhesives important?
The heat performance of I-joists, glulam beams, finger-jointed
studs and engineered wood doors has come under increased
scrutiny in the last several years. The impetus for more
rigorous oversight has come from firefighters and various
North American building code agencies increasingly concerned
with fire safety as a result of catastrophic events such
as 9/11. This has led industry standards organizations
such as WIJMA, the AWC, the ALSC and the CLSAB to conduct
adhesive testing and propose more rigorous heat performance
The issue is trust and confidence. Engineered wood products
have been embraced by the building industry over the past
several decades because they have been shown to outperform
conventional lumber in a variety of ways including in strength,
stability and ease-of-use. Maximum interchangeability with solid
sawn lumber under high heat is essential to the value proposition
of these products.
HexiTherm Adhesives allow manufacturers, builders, fire
professionals and consumers to be confident that when it
comes to fire conditions, HexiTherm bonded building products
will meet the highest heat resistance standards and perform
like conventional lumber.
What are the benefits of HexiTherm?
As mentioned above, HexiTherm Adhesives allow manufacturers
and their customers to get all the benefits of engineered
wood and maximum interchangeably in heat performance with solid
Engineered lumber has seen steady market share acceptance
and growth over the past several decades because it has
promised benefits over solid sawn lumber along with this
interchangeability in fire performance. HexiTherm adhesives
reinforce this value proposition.
By using HexiTherm adhesives, manufacturers send a clear,
unequivocal message to contractors, architects and local
code authorities that their products have passed the most
severe heat and fire performance tests.
What are some examples of HexiTherm Adhesives?
The HexiTherm Adhesive family comprises a broad range
of technologies for use in I-joists, glulam beams, finger-jointed
studs and engineered wood doors.
HexiTherm Adhesives for I-joists and Glue-laminated
- “Gold standard” phenol-resorcinol and phenol-resorcinol-formaldehyde-based
- Range of catalysts to fit individual plant conditions
wet or dry use exposure
HexiTherm Adhesives for Finger-jointed
- Unique, high solids, melamine-based systems that meet
Method A requirements of new ALSC standards
systems that also carry a Heat Resistant Adhesive (HRA)
designation per Method A
- Radio frequency curable melamine-resorcinol-formaldehyde
(MRF) system that has been certified as an HRA per Method
HexiTherm Adhesives for Door Applications
- Cross-linked polyvinyl acetate (PVA) systems
- Both one and two component
systems with emulsified phenolic content available for various
- Heat and ambient cure formulas
Why choose HexiTherm from Momentive?
If you want your engineered wood products to meet or exceed
the highest industry standards for fire and heat performance – and
perform like solid sawn under the most rigorous conditions – HexiTherm
Adhesives are the answer. When contractors, architects
and local code authorities see the HexiTherm name, they
can have trust and confidence in the fire performance of
the engineered wood products they’re using or certifying.
As a result, manufacturers can have trust and confidence
that their HexiTherm bonded products will be accepted in
Like all Momentive products, HexiTherm Adhesives come with
extensive technical support. Complete HexiTherm service
programs include visits by our technical field staff to
review your site specific requirements, assistance with
product specification and process optimization and equipment
recommendations for using our adhesives.
At Momentive, we make it as hassle-free as possible.
if I have additional questions?
For more information about
HexiTherm Adhesives, contact your Momentive representative
Norbert Milota (+1 604 562 9961)
Chris Reed (+1 775 224 2910)
Scott McIntyre (+1 541 517 3433)
Tom Tanner (+1 920 819 6448)