DG Dakwerken · since 2023 South Holland

Roofer, your roof,
the crown
on your home.

Family-run business from Westland for roof repair, tiled roofs, bitumen, roof insulation and zinc work across South Holland, including The Hague region. Craftsmanship that lasts decades.

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  • Emergency service Response within 3 hours
  • No call-out fee Honest from the start
  • 10-year warranty on completed work On workmanship
  • VCA-certified Safety standard
01 . Our promise

Every project, with the highest care
carried out for you.

Quincy and Marvin are physically on your roof, no subcontractors, no go-betweens. Whether it is an emergency leak, a full replacement or new construction: you speak directly with the roofer doing the work. One point of contact, a written quote before we start, a photo report at completion. That is how they have worked since 2023.

We always carry out our work safely and with the best-quality products. — Quincy & Marvin de Groen

04 — Customer stories

What our customers
say about us.

I hired DG Dakwerken for a new tiled roof and it went very well! The guys were very friendly, explained everything clearly and worked quickly. Our roof now looks great and keeps the rain out. Pleasant company, would happily hire again!
DG Dakwerken — tiled roof in a residential street
New tiled roof South Holland
DG Dakwerken repaired our flat bitumen roof in The Hague properly! They came over, gave honest advice and replaced it quickly and neatly. No fuss, the roof is sturdy again and good for years. Very happy, great service!
DG Dakwerken — anthracite tiled roof with dormer
Bitumen replacement The Hague
DG Dakwerken solved my roof leak in The Hague nicely! They came by quickly, found the problem fast and fixed it neatly. Everything was explained well, the roof is back in order. Reliable company, would definitely recommend!
DG Dakwerken — tiled roof with zinc valley
Emergency leak repair The Hague

Examples from our service area. Google reviews per town will follow shortly.

02 — Specialty

Our services.

Flat roofs, tiled roofs, zinc and lead, insulation. From an emergency leak repair to a complete new roof — our own crew on site, materials from Wienerberger, Recticel, Luijtgaarde and Zinkunie.

Tiled roofs
01 DG

Tiled roofs

Classic craftsmanship in ceramic, concrete or slate tiles. Strong-bonded, insulating, decade-proof.

Quick-laid or classic, leak-free, with proper ventilation and underlayment.

More on tiled roofs
Bitumen roofs
02 DG

Bitumen roofs

Flat roofs with double-layer APP/SBS bitumen. Leak-free up to 25 years.

For garages, extensions and commercial buildings. Fire-safe and durable.

More on bitumen roofs
Roof insulation
03 DG

Roof insulation

PIR/PUR insulation per BENG requirements. Energy savings up to 30%.

ISDE 2026 subsidy possible. Comfort in winter and summer.

More on roof insulation
Lead & zinc work
04 DG

Lead & zinc work

Gutters, chimney flashings, edge work. In partnership with Zinkunie.

Craftsmanship that literally lasts decades. Custom-soldered.

More on lead & zinc work
Pointing
05 DG

Pointing

Chimney renovation and re-pointing roof eaves. Combines with roofing.

Leak-free, finely finished, with the right mortar recipe.

More on pointing
Demolition
06 DG

Demolition

Safe removal of old roofs — asbestos-certified.

Including disposal, environmentally responsible processing, clean delivery.

More on demolition
Material partners
  • Zinkunie
  • NedZink
  • VMZINC
  • Iko
  • Esha
  • Creaton
  • Luijtgaarde
  1. I

    Family business

    Quincy and Marvin de Groen — brothers with one mission: roofing you'll enjoy for years. No call-center, one direct line.

  2. II

    VCA-certified

    Safety on the roof is not optional. We work to VCA standards, with the right materials and fall protection.

  3. III

    9+ years' experience

    Nine years of working experience, built up from one-man jobs to a full team. What we don't know about a roof, you don't need to know.

  4. IV

    Honest pricing

    Clear prices on paper. We show what you get and call back within 24 hours with a fixed quote.

05 — Service area

Proud of South Holland.

DG Dakwerken serves all of South Holland . From the bustling heart of Rotterdam to the historic neighbourhoods of The Hague. Click a city for your local roofer.

06 — Frequently asked

Questions about roofing in South Holland.

Clear answers to the questions we hear most, no fine print, no marketing-speak.

What does a roofer cost in South Holland on average?

Honest answer: it depends on the work. A small tiled-roof repair (5-10 tiles + lead flashing) is around €150-300. Full bitumen replacement on 80 m² runs €4,500-6,500. Roof inspection is part of our quotation process. We always provide a written quote without surprises afterwards, no broken-down hourly rates, no 'extra work' bills. Request an on-site inspection and you'll have a substantiated price on paper within 48 hours.

How do I know if my roof needs repair or full replacement?

We look at three things: age of the current covering (bitumen 25-30 years, tiles 50+), number of leaks or repair cycles in the past 3 years, and condition of the underlying structure (decking, insulation). One leak usually means a spot repair. Three leaks in two years on a 30-year-old roof = replacement is more cost-effective long-term. When in doubt we inspect for free and quote both options — you decide.

Do you also work for residents' associations and commercial buildings?

Yes. For residents' associations (VvE) we provide written roof inspection reports with urgency indicators, long-term maintenance plan input, and clear scenario-based quotes. For commercial buildings in Westland, Rotterdam and The Hague we work VCA-safely with large-area bitumen, EPDM and PVC sheeting. Mention upfront whether you're calling on behalf of a VvE or company so we can scope the quote correctly.

What guarantee do you give on completed roofing work?

10-year guarantee on completed work (full roof renewal or renovation) — not just the materials. Repair work is not covered by that guarantee because the underlying condition of existing roofing is often not predictable. For completed work: if something fails within those 10 years that's down to our workmanship, we come and fix it at no extra charge. On top of that you have manufacturer warranties on materials: bitumen 10-15 years, EPDM 20+ years, NedZink 30+ years, clay tiles 50+ years. Everything is in writing in the quote.

How quickly can you respond to an urgent leak or storm damage?

From The Hague we reach most of South Holland within 30-60 minutes once an emergency is confirmed. Distant towns like Hook of Holland or Maassluis take 50-70 minutes. We are reachable by phone during business hours (Mon–Fri 8:00–17:00) on +31 6 18 53 02 78; outside hours via WhatsApp — emergency response time within 3 hours, including weekends and public holidays. On arrival, temporary weatherproofing first to limit water damage; permanent repair follows once weather and scheduling allow. No call-out fees, even for emergencies.

Which roofing materials do you use as standard?

For flat roofs: APP or SBS bitumen (double layer) from Iko or Esha, or EPDM for difficult connections. For tiled roofs: ceramic clay tiles from Creaton or Nelskamp, or concrete tiles from Luijtgaarde. For zinc and lead: NedZink with Zinkunie-certified installation methods . We are an official Zinkunie partner. For insulation: PIR boards meeting BENG 2026 requirements. We advise per situation what fits best — and explain why.

Will I get a written quote before work starts?

Always. No handshake deals. After the on-site inspection we send a written quote within 48 hours with: scope of work, materials with brand and specification, total price (including VAT), schedule, warranty period and payment terms. You sign for approval, we schedule. Questions or changes? No problem — adjust the quote in consultation. No signed quote = no work.

06 — What's happening

The latest news
from DG Dakwerken.

We follow the roofing trade closely — innovative materials, current legislation, subsidies, the Bikudak collective agreement. In our blog we share practical tips, sector news and tailored advice for homeowners in The Hague and surroundings.

  1. Subsidies 2026 · Q2

    ISDE 2026 — what changes for roof insulation?

    Higher amounts for PIR/PUR insulation, stricter BENG requirements. We list what it means for your roof.

  2. Bikudak 2026 · May

    Wage rises in the roofing trade.

    What the new Bikudak collective agreement means for work on the roof — and how we keep pricing sharp.

  3. Materials 2026 · Apr

    EPDM vs. bitumen — which suits your flat roof?

    Lifespan, price, maintenance, environmental profile. An honest comparison, no sales pitch.

The blog is on its way — sign up for updates via the contact form.

07 — Get started

Your roof project
starts here.

We call you back within 24 hours with a written quote. Quincy or Marvin works on your roof in person.

Certified & networked with
VCA Zinkunie