Residential Block Roof Repair in Varna in Dobrich
Comprehensive solutions for the repair of flat and pitched roofs on panel, EPC, and brick blocks.
About this service
Comprehensive solutions for the repair of flat and pitched roofs on panel, EPC, and brick blocks. We guarantee to stop leaks and improve the energy efficiency of the building with projects from 400 to over 3000 m². Prices for full repair start from 19 €/m², and a standard project of 1200 m² is completed within 20-30 working days. We ensure full coordination with block managers and general meetings.
За обекти в Добрич планираме работата според открития терен, ветровото натоварване и достъпа в райони като Балик, Дружба, Изгрев, Рилци. Офертата отчита реалните условия на място, нужната подготовка и устойчивостта на изпълнението във времето.
What we deliver and which problem we solve
What we deliver
Infra Remonti EOOD specialises in large-scale roof repair projects for residential blocks, including panel constructions (series Bs-69-Sf), EPC, and brick buildings. Our scope of work is national, with a primary focus on Varna, Burgas, Plovdiv, and Sofia, possessing the logistical capacity and specialised teams to carry out repairs on areas over 2500 m². We understand the specifics of working with condominium properties and offer a full package of services, starting with consultation of the block manager, participation in a general meeting to present the technical solution, and concluding with signing a handover protocol and issuing a 15-year written warranty. We use heavy equipment, including construction cranes and hoists, for efficient loading of materials and removal of construction waste, minimising inconvenience to residents. In Varna and Burgas, we mandatorily apply materials with enhanced protection against corrosion from salty air, such as polymer-coated sheet metal and SBS bitumen membranes with high UV resistance.
Which problem we solve
An unrepaired residential block roof leads to a cascade of problems affecting all residents, not just those on the top floor. Initial leaks quickly compromise plaster and paint, leading to mould and mildew formation, which are hazardous to health. If no action is taken, moisture penetrates the reinforced concrete roof slab, causing rebar corrosion and structural weakening of the entire building. This is a slow but extremely destructive process. Old or missing thermal insulation leads to huge heat losses in winter and overheating in summer, directly impacting the energy bills of top-floor households by up to 30-40%. Clogged or damaged gutters and downpipes cause water to overflow down the facade, damaging plaster and compromising external thermal insulation. Our timely intervention stops these processes, prevents costly future repairs to apartments and common areas, and increases the market value of properties throughout the building.
Do you have leaks and mould on the top floor?
Contact us at +359 88 654 0238 to schedule a free inspection with your block manager.
What does a complete block roof repair include?
Our service is comprehensive and covers all necessary stages for a long-lasting and secure result.
Thermographic diagnostics and drone inspection
For projects over 500 m², we conduct an initial inspection with a drone equipped with a FLIR thermal camera. This allows us to identify areas of heat loss and hidden moisture under existing coverings, making subsequent repairs much more precise and effective. The results are documented in a report for the block manager.
Full removal of old roof layers
Complete dismantling and removal of all existing compromised layers – old bitumen waterproofing, cracked tiles, rotten laths, old thermal insulation. The work is carried out mechanically, and waste is transported to a licensed landfill, with the cost included in the quote.
Repair and preparation of the base (reinforced concrete slab)
Cleaning the base to a sound surface. All cracks, defects, and imperfections in the reinforced concrete slab are treated and filled with specialised, high-strength polymer-cement repair compounds, such as from the Sika MonoTop series. This provides a stable and level base for subsequent systems.
Construction of drainage slopes (for flat roofs)
Formation of new or correction of existing slopes of at least 1.5% towards the drains. We use lightweight reinforced screed (e.g., Latermix) or wedge-shaped XPS boards to ensure quick and complete water drainage and prevent ponding, which is a major cause of defects.
Installation of vapour barrier layer
Laying a vapour barrier membrane (e.g., SikaVap or equivalent) directly on the reinforced concrete slab. This step is critical as it prevents moisture penetration from inside the building (condensation) into the thermal insulation layer, which would compromise its effectiveness and lead to mould.
Laying new thermal insulation (XPS/EPS)
Installation of high-density extruded (XPS) or expanded (EPS) polystyrene thermal insulation boards. The standard thickness for residential blocks is between 10 and 20 cm, with a thermal conductivity coefficient λ ≈ 0.033-0.038 W/mK. The boards are installed tightly together and mechanically fastened.
Two-layer SBS bitumen waterproofing system
For flat roofs, we lay a two-layer system of SBS-modified bitumen membranes with a total thickness of at least 8mm (e.g., 4mm base + 4.5mm finishing layer with chippings). The membranes are laid by torch-welding, ensuring full overlap and sealing of joints for 100% watertightness.
New roof structure and tiles (for pitched roofs)
For pitched roofs, we build a new wooden batten system from impregnated material, lay a diffusion membrane (breathable membrane, e.g., Bramac Universal), and install new concrete or ceramic tiles (Bramac, Tondach). We complete all details around chimneys and dormers, providing full protection.
Complete replacement of sheet metal elements
Manufacturing and installation of all necessary sheet metal flashings – around chimneys, parapets, elevator shafts, vents. We use galvanised sheet metal with a polyester coating, 0.55 mm thick, which provides long-lasting corrosion protection, especially in the marine climate of Varna and Burgas.
Replacement of gutters, downpipes, and lightning protection
Dismantling old and installing new drainage systems with gutters and downpipes of appropriate diameter (e.g., Ø150/Ø110), tailored to the roof area. We inspect and, if necessary, restore or build new lightning protection systems according to current regulations to ensure building safety.
Work Process: From Inspection to Warranty
We follow a clear and transparent 8-step procedure to ensure predictability and control for the condominium property.
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1. Meeting with block manager and on-site inspection
Our technical manager conducts a free roof inspection together with the block manager. We take measurements, photo-document problems, and discuss possible solutions. If necessary, we participate in a General Meeting to answer residents' questions and present our expertise and approach.
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2. Preparation of a detailed technical offer
Based on the inspection, we prepare a detailed, quantitative and value-based estimate (offer). It describes all types of work, materials (with specified brands and technical parameters), areas, unit prices, and total cost. The offer also includes a clear execution schedule and is valid for 30 days, giving the condominium property time to make a decision.
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3. Signing a contract and advance payment
After the offer's approval by the General Meeting, we sign an official construction contract between "Infra Remonti" EOOD and the Condominium Property. The contract regulates all rights, obligations, deadlines, and guarantees. The process starts after payment of the first instalment of 30% of the agreed amount.
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4. Site preparation and material delivery
The site is secured – protective fences, warning signs, and if needed, scaffolding or a hoist are installed. We organise the delivery of all necessary materials, storing them in designated places to not obstruct normal life in the building. We notify the block manager of the start date of the actual activities.
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5. Demolition work and waste removal
We begin with the removal of old roof layers. This process is the noisiest and is carried out within legal working hours. Construction waste is collected in containers or removed by crane and transported daily from the site to maintain cleanliness and order. This phase takes about 3-5 days for 1000 m².
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6. Execution of main systems (base, insulation)
After demolition, the base is repaired, vapour barrier and thermal insulation are laid. This is followed by the installation of the waterproofing system (for flat roofs) or the supporting structure and diffusion membrane (for pitched roofs). This is the most important stage, where precision is applied to every detail to ensure longevity.
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7. Installation of finishing elements and details
Tiles (for pitched roofs), all sheet metal elements, gutters, downpipes, snow guards, and lightning protection are installed. Special attention is paid to critical areas around chimneys, vents, and parapets, which are sealed multiple times to eliminate any risk of leakage.
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8. Final inspection and handover of the site
After completing all activities, the site is thoroughly cleaned. We conduct a final inspection together with the block manager and/or an authorised committee from the condominium property. We perform a 24-hour pressure test (flooding) for flat roofs. A bilateral handover protocol is signed, the remaining 30% is paid, and the 15-year written warranty is activated.
Are you ready to solve your block's roof problem once and for all?
Get professional advice and a quote tailored to your condominium's needs and budget.
Why do condominium owners in Varna choose Infra Remonti?
Our approach is adapted to the specific needs of working with residential blocks.
- We understand General Meeting procedures and assist block managers with clear technical documentation and presentations, facilitating decision-making.
- We issue a legally binding, written 15-year warranty for the repair to the condominium property as a legal entity, covering labour and materials.
- We offer fixed prices in a detailed quantity-value estimate, eliminating the risk of hidden fees and unforeseen costs during the project.
- We use only BS EN certified materials from leading manufacturers such as BMI Icopal, Fibran, Sika, and Bramac, ensuring quality.
- We own our own machinery, including hoists and cranes, which allows us to be independent and strictly adhere to agreed deadlines.
- We mandatorily apply two-layer SBS bitumen membranes with a total thickness of 8+ mm, which are many times more reliable than cheaper APP membranes.
- All metal flashings for Varna and Burgas are made from polyester-coated sheet metal for maximum protection against salty mist and corrosion.
- We work according to an approved schedule, minimising noise and inconvenience for residents and keeping the site clean at all times.
- Our fair 30/40/30 payment scheme means the final instalment is due only after you have accepted the work without remarks.
- Our experience with thousands of square metres of repaired block roofs allows us to anticipate and solve any potential problem before it arises.
- We provide a full set of documents – contract, material certificates, warranty card, and handover protocol for the condominium property's archive.
Materials that guarantee longevity
We select only systems and materials with proven origin and technical characteristics, corresponding to the scale of the projects.
SBS-modified bitumen membrane (e.g., General Membrane / BMI Icopal)
We use a two-layer system consisting of a base (4 mm) and an upper layer with mineral chippings (4.5-5.0 mm). The SBS (styrene-butadiene-styrene) modifier provides excellent flexibility at low temperatures (down to -25°C) and elasticity, preventing cracking due to temperature expansions of the building. The mineral chippings protect against UV rays and mechanical damage. The system has an expected lifespan of over 25 years.
Extruded polystyrene (XPS) thermal insulation
For flat roofs, we prefer FIBRANxps or similar XPS with a compressive strength over 300 kPa. The material has a closed-cell structure, making it practically waterproof (water absorption < 0.7%) and ideal for laying directly under waterproofing. With a thermal conductivity coefficient λ ≈ 0.034 W/mK, 12 cm XPS significantly improves the energy balance of the building.
Concrete repair compound (e.g., Sika MonoTop®-412 NFG)
For repairing structural defects in the reinforced concrete slab, we use one-component, polymer-modified mortars class R4 according to EN 1504-3. These compounds have high adhesion to concrete, low shrinkage, and achieve compressive strengths over 50 MPa within 28 days, ensuring a reliable and long-lasting base for roofing systems.
Concrete tiles with Protector coating (e.g., Bramac Classic)
For pitched block roofs, we recommend concrete tiles due to their durability, weight (making them resistant to strong winds), and excellent sound insulation. Models with a "Protector" coating have a smooth surface that prevents dirt accumulation and mould formation, maintaining the good appearance of the roof for longer.
Galvanised sheet metal with polyester coating
All flashings, parapets, and valley flashings are made from high-quality steel sheet metal, 0.55 mm thick. It features hot-dip galvanising (min. 275 g/m²) and a final coloured polyester coating (25 μm), providing double protection against corrosion. This is our standard for projects in the coastal cities of Varna and Burgas.
Diffusion (breathable) membrane for pitched roofs
Under the tiles, we lay a high-strength three-layer membrane (e.g., Bramac Pro Plus Resistant 140 g/m²). It is completely waterproof (Class W1), yet vapour-permeable (Sd value ~0.03 m). This allows any residual moisture from the structure to evaporate, while preventing any leaks from outside, protecting the thermal insulation and supporting structure.
Types of buildings we work on
We have experience with all types of residential buildings under condominium ownership.
Frequently asked questions
Related services in Roof repair
Protect the investment of dozens of families with a durable roof repair
Any compromise with the quality of a residential block roof repair leads to future costs and problems for all residents. Infra Remonti EOOD offers a long-term solution, based on certified materials, proven technologies, and supported by a real 15-year written warranty. Do not make any more partial repairs that don't work. Call us at +359 88 654 0238 to arrange a free inspection and consultation with your block manager. Let's ensure peace of mind and comfort for everyone in the building together.
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Any compromise with the quality of a residential block roof repair leads to future costs and problems for all residents. Infra Remonti EOOD offers a long-term solution, based on certified materials, proven technologies, and supported by a real 15-year written warranty. Do not make any more partial repairs that don't work. Call us at +359 88 654 0238 to arrange a free inspection and consultation with your block manager. Let's ensure peace of mind and comfort for everyone in the building together.
☎ 088 654 0238