When you work with G V Harrison Building Contractors Ltd you’re working with experienced tradespeople.
As the leading VELUX installer in Cambridgeshire we are committed to delivering a high standard of work and pride ourselves on delivering the highest quality of service for our customers.
Clients
Our commercial clients include:
UN World Conservation Monitoring Centre
British Trust for Ornithology
Cambridge Regional College
Godolphin
West Road Concert Hall
University of Cambridge
Kier
A multitude of property management agencies
Various parish councils
We are committed to delivering a high standard of work and will strive to minimise the impact on your organisation while the work is being carried out.
Services
New installations
Repairs, replacements and upgrades
Servicing and maintenance contracts
VELUX products have been bringing natural light and fresh air into homes and businesses for over 75 years.
New installations
Advanced technology means that with the new VELUX products you can benefit from better energy efficiency, increased light (due to slimmer frames), noise reduction, and powered operation. We can install any VELUX product.
Repairs, replacements and upgrades
In time, as with any part of the building fabric, windows can deteriorate and may need repair or replacement. We will be happy to provide advice and recommendations further to a brief site survey. It is also worth thinking about upgrading your windows with more energy efficient glazing or powered operation.
Service and maintenance
In addition to being a VELUX installer, we can service your VELUX products to keep them in good shape and detect any potential issues before they become irreversible. We recommend servicing your VELUX windows every two years. We can also offer a maintenance plan which is particularly beneficial when you have numerous VELUX products on a large site.
Products
We install all VELUX products and you can find the full VELUX product brochure here. If you require any further information or would like us to make recommendations or provide a quotation, do get in touch. We will advise you on the best product specifications for your work environment. As we are keen for you to choose the most suitable product, we offer our advice free of charge.
Please see below for details of the products we can install, replace and service for you.
Modular Skylights | Pitched roof windows | Flat roof windows
Sun Tunnels | Blinds and shutters
Want to discuss the best option for you?
Modular skylights
VELUX modular skylights were first brought to the market in 2001 and were the first prefabricated modular rooflight system to combine high energy performance, thermal stability and great strength in a slim and fully integrated design. Since then they have been used extensively to bring daylight and fresh air to commercial buildings throughout Europe.
Modular skylights come with low-energy double or triple glazing in a wide range of sizes and are available with motorized options and integral blinds. There are a number of skylight configurations available enabling us to create the perfect solution for your building.
Longlight 5-30°:
Ideal for large open areas and flat roofs
Wall-mounted Longlight 5-45°:
A rooflight series used to connect different building heights with a flat roof as the base and a vertical wall at the top
Northlight 25-90°:
For sloped, shed or saw tooth roofs. Designed to provide large amounts of glare-free daylight, ideal for spaces that require soft light for optimum indoor conditions, e.g. at schools, offices, museums and galleries
Ridgelight 25-40°:
A classic rooflight solution. A dual pitched rooflight for installation on a flat roof or at a roof apex. Ideal for buildings with large roof openings. The Ridgelights can be supplied with different types of glazing on each side to control heat and glare according to the orientation of the building.
Ridgelight at 5° with Beams:
A dual pitched rooflight installed at a 5° angle with supporting beams. The ideal solution for large roof openings, bringing daylight into galleries, circulation areas and small internal courts
Step Longlight / Ridgelight:
Multiple rows of skylight modules connect to create a large glass roof that enables great daylight design in buildings with large, open atriums.
Please take a look at the VELUX Commercial product brochure or contact us to discuss the options available.
Pitched roof windows
For decades VELUX have led the way in the design of the pitched roof window and there is now a well-established range of sizes with 3 options for internal finishes and a variety of glazing options. Most of the standard sizes are available with centre-pivot or top-hung opening and are available with either solar or electric powered operation.
Centre-pivot roof windows:
The classic design with a handle at the top where the opening sash pivots around centrally located hinges.
Top-hung roof windows:
An additional handle at the bottom of the frame allows you to open the sash which is hinged at the top. Top-hung windows offer you a great view of your skyline and maximise the available space in the room. The perfect choice for loft rooms.
Roof terrace:
Lets you access roof areas when open and allows lots of daylight in when closed.
VELUX CABRIO balcony:
Enjoy a balcony in seconds, let in more natural daylight and fresh air.
Sloping and vertical combinations:
Create larger glazed areas with combinations of centre-pivot, top-hung and vertical elements.
Dormer & mini dormer windows:
Create extra space and extra daylight in your room.
Conservation roof windows: Traditional properties in conservation areas may require the use of conservation style roof windows. These come with additional glazing bars and are factory finished in black.
Special function roof windows:
VELUX also manufacture a number of specialised windows for other requirements. These include smoke ventilation windows, smart (heat recovery) ventilation windows, burglar resistant windows and Passive House windows.
Download the VELUX product brochure or contact us for further information.
Flat roof windows
VELUX flat roof windows are available in 3 different formats, all of which come with highly insulated PVC frames and a two-layer low-energy pane for optimal energy efficiency. They can also be either fixed or electrically powered.
VELUX curved glass rooflight:
The VELUX curved glass rooflight features CurveTech, a curve-shaped glass top that enables rainwater to easily drain off – even on 0° pitched roofs!
VELUX flat glass rooflight:
Available for any roof with a 2°-15° pitch. Featuring a special coating to allow easy cleaning.
VELUX flat roof dome:
Ideal for offices, clinics, workshops and homes.
Smoke ventilation and emergency escape windows are also available.
VARIO
An opportunity to create your own bespoke rooflight with VARIO by VELUX. There are endless possibilities with shapes, sizes and frame colours. You can even choose walk-on glass!
Download the VARIO brochure here.
Sun tunnels
Bringing daylight into windowless areas, such as corridors, landings and bathrooms, creating a more inviting environment. Options are available for pitched or flat roofs.
Download the VELUX product brochure here.
Blinds and shutters
Manually operated or VELUX Integra electric and solar powered blinds are available for all types of roof windows in various styles and colours. There is a wide range of blinds and shutters available for controlling the amount of daylight you let in and the temperature of the room. Internal blackout blinds, energy blinds, roller blinds, Venetian blinds and external roller shutters to name a few. The choice is often bewildering but we can advise and guide you.
Download the VELUX blinds and shutters brochure.
VELUX ACTIVE
The VELUX ACTIVE system provides a method of controlling the environmental conditions within your home using sensors to control your VELUX Integra products. VELUX ACTIVE with NETAMO uses smart sensors to continuously monitor the temperature, humidity and CO2 levels in your home and open or close your VELUX Integra roof windows, blinds and shutters to create a healthier indoor climate.
For more information check out page 25 of the new VELUX product brochure.