Lee FlecknellEmergency roof repairs, rental property · August 2026
Highly recommend this company carried out some emergency roof repairs on one of my properties would use again.
Google reviewRead it on Google →
Flat roofing · Watford WD17, WD18, WD19, WD24, WD25
Flat roofing in Watford that deals with the deck and drainage
Flat roofing in Watford that deals with the deck and the drainage, not just the surface. Best Top Roofing Ltd replaces worn flat roofs in rubber, fibreglass or felt and renews soft decking wherever it is needed, because a puddle by a blocked outlet needs a different fix from rotten boards under a split roof. Talk it through with Thomas on 07429 820474.
A rear roof under Nascot's garden trees needs an outlet you can keep clear. The council's appraisal records substantial tree cover around Park Road and Langley Road, with planting also threaded through the terraced streets. Leaves settle against an upstand, then travel towards the drain when rain arrives. If an old felt edge is already lifting, trapped water keeps that weak point wet. Oxhey's terraced layout creates a different constraint: an extension roof is approached through a passage or the house when the plot has no usable side access. Materials, removed boards and working platforms all need a route planned around that space. These are reasons to inspect the whole installation before settling on the appearance or price of a new covering.
Our survey checks where the water goes, the height available beneath wall flashings and the strength of the supporting deck. We discuss how boards and rolls will reach an enclosed rear roof and include the necessary access in the scope. Once stripping begins, defective boards are taken out and their supports checked before replacement decking is fixed. We correct the base to direct water towards the outlet, then install the selected waterproofing: adhered EPDM with compatible corner pieces, a reinforced GRP laminate or layered roofing felt. Wall abutments and rooflight kerbs receive the details specified for that system. Before finishing, we check trims and discharge points and clear the debris produced by the work, leaving the drainage route open for future maintenance.
For a Watford garage or extension, ask for a free fixed written quote that identifies the covering and the preparation beneath it. Best Top is a family business, and Thomas is your contact for discussing the work. The family turns up to carry it out. Homeowners can compare roof systems, landlords can set out access with occupiers, and small businesses can explain how the space below is used. In the Google reviews, a flat roof customer says the work followed their wishes; another customer praises professional, clean workmanship. You can read those comments before making a decision. There is no obligation to accept our quotation. Call 07429 820474 and arrange a survey of the flat roof that needs attention.
ServiceFlat roofs
AreaWatford, WD17, WD18, WD19, WD24, WD25
Homes hereVictorian railway-era slate roofs, red clay tiles on period houses, inter-war semis and post-war tiled estates with flat additions
Also coveringNascot Wood, Cassiobury, Oxhey Village, North Watford, West Watford, Garston
What flat roofs in Watford includes
- Rooflights and roof lanterns fitted or re-sealed
- Old covering stripped and the deck checked board by board
- Soft, rotten or delaminated decking replaced with new boards
- EPDM rubber, GRP fibreglass or torch-on felt laid to the manufacturer's spec
- Upstands and flashings where the roof meets walls and windows
- Firrings added where the roof needs a better fall
Our recent flat roofs work
Photos of our own jobs. Tap to enlarge.
Before: garage flat roof covered in moss and failing felt
New rubber flat roof with black trims on a rear extension, roofer standing on it
How it works
First call
Ring 07429 820474 Monday to Saturday, or send the form and we ring you back.
A proper look in Watford
From the roof and the loft, so the price is for the real problem, not a guess.
Your price in writing
Fixed, itemised and yours to think about with no pressure.
Done and guaranteed
The family on the job, a tidy site and a 10 year guarantee on every new re-roof.
Flat roofs in Watford: questions
Will a rubber roof solve ponding on my Watford extension?
Rubber provides waterproofing, but it does not change the slope beneath it. We inspect the deck levels and outlet position first. Correcting a hollow or restricted drain is part of defining the job, whichever covering you choose for the roof.
How do you plan a flat roof replacement on an Oxhey terrace?
Tell us about the passage, rear gate and any rooms that provide access. We assess the working route and protection needed before quoting. Large decking boards, waste removal and safe roof access need space, so those arrangements belong in the plan.
What maintenance matters beneath trees in Nascot?
Keep the roof's drainage points clear of fallen leaves and check after heavy leaf fall. Inspect from a safe position rather than walking onto the covering. Report lifting edges, repeated overflow or a new indoor stain, and arrange a roofing inspection.
How long does a flat roof replacement take?
A single garage or small extension is usually one to two days. Larger extensions, balconies and roofs that need full re-decking take longer, and the timing is in the quote.
Which is best, EPDM, GRP or felt?
EPDM suits most garages and extensions and lasts a very long time. GRP is best where the roof is walked on or has lots of corners and upstands. Felt is the most economical. Our EPDM vs GRP guide compares them side by side.
Other roofing services in Watford
Reviews
What customers say on Google
Dannie SmithQuoted the next day · June 2026
Thomas came and gave me a quote next day, very professional and clean work was carried out. I will be using best top roofing for all my projects going forward and would highly recommend them.
Google reviewRead it on Google →
R Vidya RLeaking felt roof repaired · September 2026
thanks to Thomas for fixing our roof. It was pleasure working with you. I feel confident that the water leak is accessed from all points and all problem addressed
Checkatrade reviewRead it on Checkatrade →
Lee SextonNew flat roof · April 2026
I needed a new flat roofing doing and this amazing company did it exactly how I wanted it. Highly recommended. Friendly and polite. Would use and again and tell all my friends and family.
Google reviewRead it on Google →
Mahmoud Al SuwwanRoof problem fixed · August 2026
We had a problem in our roof we called this company and they solved the problem so happy and satisfied. I really highly recommend if anyone needs roofing work done if I ever need a roofer again hopefully we don't if I ever did I will always use this company again, thank you so much, guys.
Google reviewRead it on Google →
Lisa DunneBlocked gutters cleared · April 2026
Cleaned out our gutters as were blocked and overflowing. Very happy with the job done. Thank you very much!
Google reviewRead it on Google →
Ligita KaledaiteChosen over other quotes · July 2026
Very friendly. Had couple of Quotes from other companys And this was the best company for it.
Google reviewRead it on Google →
Sally MaskellRoofing work by Thomas · June 2026
Very impressed with the work that Thomas has done. Definitely recommend.
Google reviewRead it on Google →
Scarlet BullRoofing work · August 2026
Professional, good quality work! Recommended.
Google reviewRead it on Google →
Checkatrade customerBalcony roof installation · August 2026
Fantastic, professional and polite throughout the job.
Checkatrade reviewRead it on Checkatrade →
Flat roofs in Watford? Talk to us
Ring or send the form. We come out, look at the roof, show you what is needed and give you a fixed written price. No pressure and no hidden extras.