Windows & Doors in Perth

Replacing old windows and doors is one of the most impactful improvements you can make — boosting energy efficiency, security, kerb appeal, and property value in one project.

We supply and install high-quality uPVC, timber, and aluminium windows and doors from trusted manufacturers, with full after-sales support.

Whether you need a single replacement window, a new composite front door, or a complete set of bi-fold doors for your extension, Marshall & Co delivers professional installation with meticulous attention to detail across Perth, Dundee, and Perthshire.

Why Marshall & Co?

Old, single-glazed, or poorly sealed windows and doors are one of the biggest sources of heat loss in Scottish homes. Upgrading to modern A-rated double or triple glazing can reduce heat loss through windows by up to 80%, leading to significantly lower energy bills and a more comfortable home — particularly important during long Scottish winters.

Security is another major benefit. Modern windows feature internal beading (glass is removed from the inside, not outside), multipoint locking mechanisms, and toughened or laminated glass options. Composite front doors are virtually impossible to force and come with high-security multipoint locks as standard.

Kerb appeal is the third key benefit. New windows and a quality front door transform the appearance of a property instantly. Whether you're refreshing your own home or preparing a property for sale, this is one of the highest-impact, best-value improvements you can make.

uPVC remains the most popular choice for replacement windows in Perth and Perthshire. Modern uPVC frames are far removed from the cheap, yellowing plastic of decades past — today's frames are reinforced with steel, available in a huge range of colours and woodgrain foils, and come with A-rated energy performance as standard. They require no painting or maintenance beyond occasional cleaning.

Aluminium frames offer a more contemporary aesthetic with slimmer sightlines (the visible frame width), allowing more glass area and a sleeker appearance. They're particularly popular for bi-fold doors, sliding doors, and modern extensions where a minimalist look is desired. Aluminium is also extremely durable and maintenance-free.

Timber windows suit period and character properties where maintaining a traditional aesthetic is important. Engineered timber frames offer excellent thermal performance and can be painted or stained to any colour. They do require periodic maintenance (repainting every 5–8 years) but many homeowners feel the natural warmth and character of timber is worth the effort.

Bi-fold doors have become one of the most requested products across our extension and renovation projects in Perth. By folding back to create a wide, unobstructed opening between your living space and garden, they flood rooms with natural light and create a seamless indoor-outdoor connection that transforms how you use your home.

We install aluminium bi-fold doors in configurations from two panels up to seven panels, with opening widths from 1.8 metres to over 6 metres. Standard colours include anthracite grey (RAL 7016), which is by far the most popular, as well as black, white, and a full RAL colour palette for bespoke requirements.

All our bi-fold doors feature high-security multipoint locking, low-threshold options for easy wheelchair and pushchair access, and A-rated double or triple glazed units for thermal efficiency. They can be configured to open inward or outward, and with the traffic door positioned on either side for everyday access without opening the full set.

Window replacement costs depend on the number and size of windows, the material chosen, and the glass specification. As a guide, a standard uPVC casement window costs between £400 and £700 installed, while an aluminium window might cost £600–£1,000. A full house of windows (8–12 units) typically costs between £4,000 and £10,000.

Composite front doors range from £800 to £2,000 installed, depending on the style, colour, and glazing options. Bi-fold doors typically cost between £1,200 and £2,000 per panel installed, so a four-panel set might cost £5,000–£8,000.

We provide fully itemised quotations with every window and door priced individually, so you can see exactly what you're paying and adjust the specification if needed.

A-rated energy-efficient glazing that reduces heat loss by up to 80%

High-security multipoint locking on all windows and doors

Wide range of styles, colours, and woodgrain finishes

uPVC, aluminium, and timber frame options to suit every property

Bi-fold and sliding doors for stunning indoor-outdoor living

Professional installation with full weatherproofing and trims

No painting or maintenance required on uPVC and aluminium

Full after-sales support and manufacturer guarantees