Trade double glazed sealed units in Harpenden
Installers and builders working across Harpenden use us for double glazed sealed units made to order, quoted per item and delivered to site.
- Guide trade price
- £38 to £85 per m², ex VAT, supply only, delivery extra
- Main postcodes
- AL5
- Area
- Hertfordshire
- Lead time
- We confirm the production and delivery date for double glazed sealed units when your order is acknowledged.
Double glazed sealed units for Harpenden jobs
Overall thickness has to match the frame rebate. A 28mm unit will not go into a frame glazed for 24mm, so check before you order.
Glass in critical locations, such as doors, side panels and low-level glazing, must break safely, be robust or be protected; in practice that usually means toughened or laminated glass. Mark those units on your schedule.
- Aluminium or warm-edge spacer bars
- Georgian bars between the panes
- Spacer colours to match frames
- Toughened, laminated, obscure and acoustic glass options
Delivery to Harpenden
Deliveries to Harpenden are booked once your order is in production. The charge is itemised on the quote and the delivery day is confirmed with you in advance. Postcode districts include AL5.
Getting a price
List every item on one schedule with sizes in millimetres, width first. Add the finish and options per line and we price each one.
Trade accounts are open to installers, builders, developers, landlords and property businesses. Apply online and your account terms are agreed when it is opened.
Measuring tip
Measure the glass, not the frame: remove the beads and measure the existing unit, or measure the rebate and deduct the glazing clearance. Give width first, then height, and the overall unit thickness.
Regulations for jobs in Harpenden
Under Approved Document K, glazing in critical locations (doors, and side panels within 300mm of a door, up to 1500mm above floor level; other glazing below 800mm) must break safely, be robust or in small panes, or be permanently protected. Toughened and laminated safety glass are classified to BS EN 12600. Replacing only the glass in an existing frame is generally treated as a repair rather than notifiable work.
How ordering works
List what you need
One line per window, door or unit, with width, height and finish.
Check your quote
We price each item and flag anything that needs clarifying.
Confirm the order
Production starts only after you approve the written order.
Receive your goods
We aim to deliver on the confirmed date; check the goods against the delivery note.
Double glazed sealed units in Harpenden
Can I collect instead of having double glazed sealed units delivered to Harpenden?
Collection is not normally offered, because orders are delivered to site or yard. Ask when you order and we will say whether it can be arranged.
Do I need a trade account to order double glazed sealed units for a job in Harpenden?
Yes, trade prices are for account holders. Applying is quick, and you can send your schedule for pricing while the account is set up.
Do you deliver double glazed sealed units to Harpenden?
Yes, Harpenden is within our delivery area. The charge and the date are confirmed when you order.
Why is my sealed unit misted?
The edge seal has failed and moisture has got between the panes. The unit needs replacing; the frame can usually stay.