trading since 1983

Professional building and roofing contractors in Harpenden

Expert Building & Roofing Contractors in Harpenden

Professional Building and Roofing Contractors

If you are looking for professional building and roofing contractors who offer a range of services throughout Harpenden – you are in safe hands with P & A Doherty Builders. Domestic and commercial customers approach us to help them with building projects of varying complexity, including extensions and conversions.

With over 45 years of collective experience in the industry, we are incredibly proud of our reputation for delivering excellent standards of work at affordable prices. New customers can contact us for a free, no-obligation quote.

You Can Rely On

Are you in Harpenden and need a builder?
Below are just a few of the building services we provide:





Plastering and Rendering

Plumbing and Heating

Painting and Decorating

We are also fully qualified to install porches, conservatories, windows and doors, bathrooms and kitchens and building extensions within 10 miles of our base in St Albans.

Building Services

Are you in Borehamwood and in need of a builder? Below are just a few of the building services we provide:

Harpenden's Premier Roofers

Your roof probably isn’t something you think about day in and day out, yet it is integral to your home. If you need a new or replacement roof that is watertight and structurally sound – our team is here to help. Our roofers are highly trained and comfortable working from height. We design and install tile, slate and flat roofs that are pleasing to the eye and highly durable.   

Flat Roof Specialists

A cost-effective and versatile style of roof, flat roofs are suitable for almost any type of property. We install EPDM single-ply rubber roof systems, GRP fibreglass roofs and traditional felt roofing to an excellent standard throughout Harpenden.

Professional Roof Repairs in Harpenden

Keeping your roof well-maintained is essential, as even minor issues can cause major problems later on. Tree damage following a storm, missing tiles or an obvious leak can be hazardous and compromise your home’s structural integrity Our roofers can tackle a variety of roof repairs, giving you peace of mind that your roof will last the test of time.

Extensions & Conversions to Your Harpenden Home

An extension or conversion is an excellent way to increase your floor plan without the hassle of moving house. We can discuss the types of extensions or conversions that are viable for your property, taking into account your budget, property type and objectives. We will also project manage every stage of the work to ensure quality control.

Chimney Repointing & Leadwork in Harpenden

We offer chimney repointing services throughout Harpenden to restore your chimney’s structural integrity. Signs your chimney might need repointing include cracks, falling masonry and roof leaks. However, by replacing the mortar joints, we can make your chimney as good as new. Our team also replace leadwork flashing so your roof remains fully watertight.

Fibreglass Flat Roofing

Fibreglass flat roofing is a multi-layer roofing system which offers a 20-year guarantee. This GRP waterproofing system is highly durable, resistant to UV light and can be customised to fit properties of any size. Our team specialise in the design and installation of fibreglass roofs and offers the service to private and commercial customers throughout Harpenden.

Why Choose
P & A Doherty Builders?

There are several reasons customers turn to us for our services in Harpenden:

in Touch

Searching for building and roofing contractors in Harpenden? Get in touch with P & A Doherty Builders today and a member of our friendly team will get back to you as soon as possible. 

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