Responding to a waterproofing tender (flat-roof systems, public & private contracts, EU 2026)

Waterproofing firms are regular bidders for public procurement and large structured private clients: social landlords, property funds, local authorities, estate managers, building managers and industrial owners. Their contracts group into consistent families.

• New flat-roof waterproofing: laying bituminous (two-layer torch-on) or synthetic (PVC, TPO, EPDM) membranes on a new structure, with thermal insulation beneath the waterproofing.
• Waterproofing refurbishment: stripping or overlaying an ageing system, treating singular points (upstands, rainwater outlets, expansion joints).
• Green roofs: a root-resistant waterproofing complex, drainage and filter layers, substrate — contracts with high environmental stakes.
• Structure and car-park waterproofing: slabs, intermediate floors, decks, tanking, with trafficable systems and protection layers.
• Estate refurbishment contracts: a landlord's or authority's multi-year campaign across a portfolio of roofs, often on an occupied site.
• Call-off frameworks: waterproofing upkeep and repair across an estate, triggered by successive orders over 1 to 4 years.

Across the EU the mechanism is identical in all 27 member states: above the European thresholds the public buyer publishes on TED; below them, on its national platform. An established waterproofing firm may bid for a cross-border contract subject to freedom of establishment and recognition of qualifications.

The first challenge is the price schedule. In waterproofing, each line combines a supply (bituminous or synthetic membrane, vapour barrier, insulation boards, upstand accessories, profiles, rainwater outlets) from a supplier catalog, and labor expressed most often per square metre of treated area. The BoQ must aggregate dozens of consistent items: running surfaces, upstands per linear metre, singular points per unit, with overheads, margin and contingency. A unit error (running m² confused with upstand lm), a missing rainwater outlet or an unsourced price distorts the price score — often 40 to 60% of the overall score.

The second challenge is the technical proposal. The buyer scores technical value on precise criteria: choice of system given the deck and slope, compliance with the applicable roofing-waterproofing standards, intervention methodology, and above all rainwater management during the works — often a disqualifying point if temporary weatherproofing is not described. Add work-at-height safety (guardrails, lifelines, collective protection), schedule, human and material resources, decennial cover and environmental approach. A generic proposal copied from one tender to another is penalized: you must answer the consultation rules criterion by criterion.

The third challenge is the survey of the existing roof. In refurbishment, the real state of the roof (moisture trapped in the insulation, degraded deck, failing upstands) drives the choice between overlay and full strip-out — and therefore the costing. A wrong reading of the existing turns a planned margin into a loss. The administrative side follows: qualifications, decennial insurance certificates and the ESPD/DUME in EU public procurement. A false or expired document leads to rejection — and even criminal penalties for false statements.

The assistant starts from the tender: you upload the tender file (PDF), it extracts the buyer, object, lots, award criteria and weighting, and the buyer's language. The technical proposal is then structured to develop the most heavily weighted criteria first: choice of waterproofing system, laying methodology, temporary weatherproofing and rainwater management during the works, work-at-height safety, schedule and resources — in the contract's language.

For the price schedule, you import your supplier catalogs (bituminous and synthetic membranes, insulation, upstand accessories, rainwater outlets) in Excel, CSV or PDF, and enter your rates: laying time per m², labor, overheads, margin, contingency, travel. The assistant computes each line (area or quantity × unit price excl. VAT from the catalog or the rate), applies VAT and totals, separates running surfaces, upstands and singular points, and exports an editable Excel BoQ. No price is invented: an item without a source is marked "to complete".

• Technical proposal structured around the tender's award criteria, aligned with the applicable roofing-waterproofing standards.
• Per-m² costed BoQ from your catalogs + laying times (Excel export).
• Pre-filled ESPD/DUME draft for EU public procurement.
• Deliverables in PDF, editable Word and Excel, in the buyer's language.
• Your catalogs and rates stay confidential, reusable across tenders.

You stay in control: the assistant produces a solid base that you verify, complete with your real references (comparable flat-roof projects) and sign before submission. It replaces neither your expertise of the structure, nor an on-site survey, nor legal advice — it removes the hours of formatting and calculation where the risk of error is highest.

A controlled response follows a stable sequence, whether the contract is public or private, in France or elsewhere in the EU.

• Monitoring: spot relevant waterproofing and roof-refurbishment tenders on the platforms (TED, buyer profiles).
• Tender analysis: object, lots, award criteria and weighting, deadlines, required documents, and the existing-roof survey in refurbishment.
• Go/no-go decision: technical capacity, similar flat-roof references, workload, access and achievable deadlines.
• Costing: per-m² BoQ from catalogs + laying times, separating surfaces, upstands and rainwater outlets, with overheads, margin and contingency.
• Technical proposal: answer the criteria item by item, system choice, standards compliance, rainwater management during the works, work-at-height safety, schedule.
• Administrative documents: ESPD/DUME, qualifications, decennial insurance certificate.
• Electronic submission before the deadline, with e-signature where required.

The BoostPro IA assistant handles steps 4 to 6 — the most time-consuming and riskiest — producing proposal, BoQ and DUME in under ten minutes from your real data. You focus your time on strategy (system choice, price, differentiation, references) rather than formatting.