Corrugated Sheet Waterproofing in Pakistan

Metal sheets located at your rooftops is present almost everywhere in Pakistan since its easier to situated during the construction and doesn’t cost a lot. But with so many benefits, it also important to understand that it’s not without any drawbacks. As the corrugated sheet is thin and made from metal, the leakage is a problem which can never be sorted out using some predated solutions like fill the gaps or opening using some plaster. Here, we are going to provide the only viable option that helps our customer to get released from this devastating trouble of leakage and seepage issues by availing the service of corrugated sheet waterproofing in Pakistan. Simply using waterproofing chemical treatment, one can get completely freed from the water-based damages once and for all.

We at Lakhwa Chemical Services keeps it quite evident for our customers that using waterproofing solution is among the most reasonable option for anything related to leakage and seepage. Looking to simply outsmart the water particles, through the airtight solution, which comes in various forms and sizes, can help our customers beat the water-based trouble for the good.

Waterproofing Price in Pakistan

Since Lakhwa Chemical Services is a waterproofing based company that guarantees on its service and products, many people asked about waterproofing price in Pakistan for their reference as well as understand a rough value if they are looking to avail our services. In general, there are several ways a customer can avail the corrugated sheet waterproofing in Pakistan such as by choosing one of various product selection for their roof. As the time of this writing, there are two most commonly used chemical material for waterproofing, namely bitumen, acrylic, and cementitious based waterproofing. Bitumen Sheets are also one of the highly used waterproofing product in Pakistan as well.

Bitumen Sheet in Pakistan

About bitumen sheet in Pakistan which is being used to limit the trouble of leakage and seepage, it’s not just the highly volatile solution with guaranteed results but can treat as the last resort solution when every other option is showing below-par results. The main reason for availing waterproofing service in Pakistan in the first place is to cover up all the potential openings from the corrugated sheet which helps us to stop the flow of water. But when you try to close the opening and become successful in it, the material itself will show the effects of corrosion once directed with water. The next most important material which acts as a shield and helps delay or in some causes completely postponed the effect of corrosion is through the use of bitumen membranes in Pakistan for your waterproofing needs.

Importance of Waterproofing Corrugated Sheets

Corrugated sheets—commonly made of metal, asbestos, or plastic—are widely used for roofing in Pakistan due to their affordability and ease of installation. However, these sheets are prone to water leakage, rust, and deterioration, especially during the monsoon season. Waterproofing is essential to prevent water seepage, extend the lifespan of the sheets, and protect the underlying structure from moisture-related damage such as mold, corrosion, and structural weakening.

Common Waterproofing Methods Used

In Pakistan, various techniques are employed to waterproof corrugated sheets, depending on budget and application:

• Bitumen Coating: A traditional and cost-effective method using hot or cold bitumen to seal joints and surfaces.

• Elastomeric Waterproofing Membranes: These are flexible, UV-resistant coatings applied with brushes or rollers that form a waterproof layer over the sheet.

• Polyurethane Coatings: Known for their durability and elasticity, polyurethane-based sealants are used for long-term protection.

• Silicone Sealants and Tapes: Ideal for sealing joints and screws in corrugated sheets.

• Fiber Reinforced Coatings: These provide extra strength and crack resistance, suitable for areas with harsh weather.

Challenges and Solutions in the Pakistani Climate

The intense summer heat, heavy rainfall, and dust in Pakistan pose challenges for maintaining waterproofed corrugated roofs. Over time, UV exposure can degrade coatings, while thermal expansion causes cracks. To address these issues, regular maintenance is key—reapplying coatings every few years and ensuring proper drainage systems are in place. Additionally, using high-quality, weather-resistant products designed for South Asian climates ensures longer-lasting results.

Frequently Ask Questions

Q. How do you waterproof a corrugated roof?
A. To waterproof a corrugated roof, clean the surface thoroughly, seal all joints and screw holes using silicone or polyurethane sealant, and then apply a waterproof coating such as elastomeric or bitumen-based paint. For enhanced protection, fiber-reinforced or UV-resistant coatings can also be applied.

Q. What is the price of waterproofing sheet in Pakistan?
A. The price of waterproofing sheets in Pakistan varies depending on the material (bitumen, HDPE, PVC, etc.). On average:

• Bitumen membrane sheets: PKR 200–500 per square meter

• HDPE/PVC waterproofing sheets: PKR 300–800 per square meter
  Prices may vary based on thickness, brand, and quantity purchased.

Q. Which is the No. 1 waterproofing material?
A. Polyurethane-based liquid membranes are often considered the best waterproofing material due to their durability, elasticity, UV resistance, and strong adhesion. However, elastomeric coatings and bitumen sheets are also popular in Pakistan for their cost-effectiveness and performance in local conditions.

Q. How to make a roof waterproof in Pakistan?
A. To make a roof waterproof in Pakistan:

• Clean and inspect the roof surface

• Repair any cracks or damaged areas

• Apply a primer (if needed)

• Use a high-quality waterproofing coating such as polyurethane, elastomeric, or bitumen

• Reinforce with fabric or fiber mesh for added strength

• Maintain the coating every few years for best results

Q. How do you waterproof roof sheets?
A. Roof sheets can be waterproofed by sealing all joints, overlaps, and screw holes with silicone or tape sealants, followed by the application of a waterproof coating. Special attention should be given to ridges and edges where leakage is most likely.

Q. How can we protect roofs from sun heat in Pakistan?
A. To protect roofs from extreme heat:

• Apply heat-reflective coatings or solar reflective paint

• Use white or light-colored waterproof membranes

• Install thermal insulation boards under the roof

• Consider green roofing (plants or grass) or shade structures to reduce direct sun exposure