other services

Although we specialise in solar and wood fuel, Tweed Renewables Ltd are also plumbing and heating engineers. We undertake all types of jobs, large and small. Here are just a few of them…

under floor heating

Tweed Renewables are proud to be announced as Rehau authorised partners for the installation of their Rautherm under floor heating systems. Underfloor heating provides the most comfortable even warmth of any heating system. It is economical to run and virtually maintenance free.

The system has water being pumped from a boiler to a pump pack, where it is mixed to approximately 50ºC then distributed via a manifold to heating circuits made using barrier pipe. The pipe is laid in concrete or suspended just below the surface of the floor. In concrete floors, the pipe is laid on insulation and then covered with a screed on which can be laid almost any type of floor covering. For timber floors, spreader plates are laid between the joists and the floor decking or on the underside of the floor. Pipe is pushed into the grooves on the plates.

An underfloor heating system works in radiant rather than convective mode. i.e. the radiant effect tends to heat objects rather than air. The same comfort levels can be achieved in a room with the air temperature at around 2°C lower than in a convective system.

The maximum floor temperature allowed, as stated in BS 1264, is 29°C. With timber flooring this is reduced to 27°C. Note that some adhesives for vinyl floor are restricted to a floor temperature of 27°C. This also affects the output of the system.

The floor area is typically warmed to between 25ºC and 28ºC, providing an even distribution of heat at only slightly higher than room temperature. The system is controlled by one or more thermostats which signal the pump pack when heat is required.
UFH install near Edleston

un-vented cylinder installation and service

Un-vented water cylinders provide mains pressure hot water at high flow rates and are ideally suited for domestic installations. If you are upgrading your hot water heating system then why not combine your new un-vented cylinder with a solar water heating system and get mains pressure hot water (up to 60% free). There is no need for a cold water cistern (header tank) when using an un-vented cylinder.
Your un-vented cylinder requires servicing every year.

Tweed Renewables Ltd are Logic approved Un-vented Hot Water Systems installers and all installs comply with current building regulations.

general plumbing

All types of general plumbing work is undertaken from central heating installation to bathroom installaton.

architects and agents

Are you looking to incorporate a solar water heating or wood fuel heating system into your next project? Many local planning departments now require a proportion of the energy required by a new domestic development to be contributed by a renewable source. Tweed Renewables Ltd can offer advise or undertake the design process as well as supply and install the heating system for your client.