Green Technology

The Total Green Contractor Solution

Off-site building applications with great design, delivered faster!


Modular Buildings and Services
By working in close partnership with our clients and tailoring the use of volumetric construction to each individual project, H.A. Marks consistently ensure our clients receive maximum benefits from off-site construction.

The Tree House, Clapham

Well insulated, air tight timber framed two-bedroom house on 6.6m wide site with access restricted by the eponymous tree. The design strategy aimed to achieve a 'zero carbon' performance and the house was built to stringent standards. This included high performance windows and whole house mechanical ventilation. The energy systems include rain water recycling, photo-voltaic generation of electricity and a system of hot water generation that combines a solar thermal panel with a vertical ground loop heat pump.

Hot water is for both domestic use and underfloor heating. As the house is also a research project, extensive monitoring equipment was built in. The foundations were piled and the timber frame sits on a concrete slab that incorporates a pond in the rear garden and a retaining wall. The frame is clad with both fire treated FSC cedar and the Weber rendering system (for which we are registered installers).

Sunnyhill Primary School

27th April 2011

This exciting project is a 250m2 School Extension for Lambeth Education.
A piled Foundation solution proved a highly cost effective solution combined with our off-site Powerwall Space Frames technology.

We have supplied and installed the building using off-site volumetric pods. The installation of the pods successfully took place in 2 days on the 21st & 22nd April.

Croxley Green Station

In the Autumn of 2008 we carried out the Refurbishment & New Service Installation works to a large Flat owned by TFL over Croxley Station. With our alternate heat source specialist Greentech we installed an air source heating system for the property.

We provided the following system which comprises of one 7kw external heat pump unit combined with an internally installed hydro box complete with 3kw backup heater and one 200l hot water tank with 3kw immersion heater, all interconnecting plumbing were as per pictures and refrigeration pipe work linking internal hydro box to external heat pump unit.

The Controls for the heating system were located behind the front cover of the hydro
box unit. In addition we installed eight new radiators including one towel rail for the bathroom, all radiators have been fitted with thermostatic rad valves.