The Loft Holiday Home - THL Modular

The Challenge

With 50 years’ experience in the
modular build industry, the challenge
for Tingdene Homes was to deliver a
cutting edge solution for a new
two-storey holiday home construction
which was to be built entirely offsite in
a controlled factory environment, with
the objective of delivering speedier
construction, factory engineered
quality and cost-effective design.

The client wanted to work closely with
a supplier who could add value by
guiding the specification of the correct
construction membranes and pitched
roof underlays to meet stringent air
tightness tests, manage condensation
risk and control the movement of
water vapour in the structure.

The building was to be manufactured
with a light gauge galvanised steel
frame, with target U-values of
0.18W/m2K for external walls and
0.14W/m2K for the roof.

This meant fabric energy efficiency
was an important aspect of this top
end specification and the chosen
membranes needed to contribute to
thermal and airtightness performance.

The Solution

Tingdene Homes contacted the Protect
technical team in the early stages of the
design and consultation process and a
series of U-value calculations was
generated using Protect products in
different wall types and proposed roof
build-ups. This ensured the most suitable
design could be achieved to meet the
target U-values and minimise the risk of
condensation and energy loss.

After a series of discussions, a number of
Protect products were then specified and
delivered to the factory for use in the
construction of the first exemplar show
home, fully LABC approved and compliant
with Building Regulations.

The chosen products delivered a total
protective solution of breathability, vapour
control and airtightness.

For wall construction membranes,
products with reflective surfaces were
selected to face into unventilated airspaces
to enhance the thermal efficiency of the
structure in combination with their strength
and durability.

On internal walls, it was crucial that the
chosen product prevented air leakage to
exceed current standards whilst
maximising thermal performance.

The roof structure required an underlay
with the highest level of wind uplift
resistance to meet Zones 1 to 5 in
compliance with BS 5534 and to provide a
secondary line of defence against wind
driven rain and snow.

Due to the modular nature of the
construction, product availability and timely
deliveries were crucial aspects so that the
separate build stations in the factory were
fed material at the right time to enable the
construction to run to schedule.

Phil Harold, Quality Assurance Manager
at Tingdene Homes commented,

“The use of numerous Protect products for
this development helped us meet
specification and achieve our target
U-values of 0.18 W/m2K for external walls
and 0.14W/m2K for the roof element.
With the many benefits of offsite
manufacture over traditional construction
including build speed, quality precision and
reliability, we wanted a supplier who
understood these principles to ensure our
delivery demands were met. Protect
supplied products quickly which enabled
our process to run without interruption and
facilitated swift turnaround at the factory.”

He added, “Thanks to the team at Protect
Membranes. Very supportive and
technically minded in the design approach
to find the best solution with continued
communication. Quality product and colour
coded product wording for simplistic use
on site. Thanks also to Business
Development Manager Jon Bowers for
being the single point of contact to
maintain fluidity.”

To download the Case Study PDF click here