Quality Windows, Doors and Conservatories in Portland, Weymouth and the wider Dorset area

When quality matters, choose Alpha Windows

Double Glazing Weymouth and Portland Double glazing porch

We install a wide range of quality uPVC double glazing and triple glazing windows, composite and uPVC front doors, back doors and conservatories in the Portland, Weymouth and wider Dorset area. Our reputation has been built on solid workmanship and customer satisfaction.


When looking for double glazing in Weymouth or Portland why not give us a call. Whether for Double glazing windows, triple glazing windows, doors or conservatories Alpha Windows have a huge range of styles. Our quality cannot be beaten by our competitors as we work with the highest quality manufactures of window, doors and conservatories.


We can quickly replace broken or misty glass and fix broken handles and locks.



Alpha Windows are also Portland's approved Planitherm® window installer for double glazing and triple glazing.


Why not ask for a quote today? You will be surprised how competitive Alpha Windows can be while offering quality windows, doors and conservatories that meet, or in most cases exceed, the quality offered by large national window companies.


With A-rated uPVC double glazing and triple glazing window glass from PLANITHERM, patterned and obscured uPVC door glass from Pilkinton, Alpha Windows brings you industry leading quality at competitive prices.

  • uPVC double glazing windows
  • uPVC triple glazing windows
  • uPVC front doors, back doors, patio doors
  • Composite front doors
  • Conservatories
  • and much much more.

Alpha Windows fits VEKA the industries leading manufacturer of quality uPVC double glazing window, uPVC door and uPVC conservatory frames. Our double glazing and triple glazing window range includes modern tilt and turn and traditional style sliding casement windows.

See our product pages for more information.


uPVC Windows Doors Conservatories Soffit Fascias and Guttering

Alpha Windows covers these areas

Quality double glazing, triple glazing, windows, doors and conservatories in Weymouth, Wyke Regis, Preston, Melcombe Regis, Upwey, Broadwey, Southill, Chiswell, Castletown, Isle of Portland, Fortuneswell, Radipole, Nottington, Westham Weston, Southwell and Easton, and the wider Dorset area.

Images courtesy of Saint-Gobain Glass, Pilkington, VEKA and FreeDigitalPhotos.net