Author: Andy

Recently, there has been an increase in the use of single-ply membrane roofing systems on the flat and low-pitch roofs of warehouses, distribution centers, and commercial buildings in the UK. The two most common types of single-ply membranes are TPO and PVC. Both PVC and TPO offer a durable, weldable, waterproof roofing system which means that they can be installed with very little disruption to the normal operations of a business. However, TPO and PVC differ with respect to their long-term performance. Selecting the less appropriate product on a particular building can lead to increased long-term costs or even premature roofing failure.

TPO: Lightweight and Cost-Effective

Thermoplastic polyolefin, also known as TPO, has become a popular option for large commercial roofs because of its cost, flexibility, and reflectivity. The white or light grey surface of TPO reflects solar heat which can reduce cooling loads in warehouses and industrial units during warm weather. Plus, TPO is lighter than many alternatives, which can be a critical factor when dealing with older commercial buildings that have weight restrictions on the roof decking.

PVC: Built for Chemical Resistance

Unlike TPO, PVC has been proven reliable, and has gained respect for its resistance to chemicals. PVC is more oil and grease resistant making it the more rational long term investment for food processing and manufacturing plant operations. These often have higher initial costs than TPO, but are long lasting and more economical.

Seam Strength and Long-Term Durability

Another area of divergence is seam strength. Both materials are hot-air welded, which means that when done correctly, seams are usually stronger than the membrane itself. However, due to the chemistry of the PVC, it is able to hold weld integrity for a longer period in more severe environments. This is important for commercial and industrial roofs that will be exposed for decades to plant equipment, foot traffic from maintenance crews, or RTU units.

Weighing Up the Cost

While costs are important for roofing contractors, they usually consider other points, other than costs. What other considerations are there? Starting off, TPO, or thermoplastic polyolefin, and PVC, or Poly Vinyl Chloride, are two options usually presented to roofing contractors. Of the two, TPO is regarded as significantly less expensive and therefore more desirable for large distribution warehouses because of the large total roof area. PVC prices, on the other hand, can be justified as they meet more demand.

Fire Performance Matters

The fire safety performance of a roofing material is also important, especially for commercial buildings with stringent insurance or building control requirements. PVC possesses good fire-retardant properties due to its chlorine content, while TPOs tend to have disparate fire safety performance results from various manufacturers. Therefore, for any given roofing material to be used in a commercial project, it is essential to examine the third-party fire test results to ascertain how well a given TPO formulation performs.

How Long Will Either Membrane Last?

When a qualified commercial roofing contractor installs each membrane and they are properly maintained with routine inspections, the longevity of both materials can reach twenty years or more. Additionally, the most significant risk to the lifespan of either type of membrane is not due to the materials, but rather poor installation. This is why the installation experience is just as important as the decision to use either TPO or PVC.

Which One Suits Your Building?

For standard warehouse, retail park, and light industrial projects without unique chemical exposures, TPO presents a solid and economical option along with real energy-saving advantages due to its reflective surface. Where business premises deal with chemicals, oil, or grease during day-to-day operations, or where there is a fire performance priority due to underwriters or building code regulations, PVC may be a justified extra cost.

Get a Proper Survey First

No matter which membrane is suitable to a specific commercial or industrial building, the best way to avoid expensive surprises down the road is getting a complete survey and definitive specifications before construction begins. A qualified commercial roofing contractor will evaluate the existing deck, usage of the building, drainage needs, and any future rooftop equipment before suggesting one system rather than the other.

Solar panel systems are a major investment, and like any other piece of critical infrastructure, they require maintenance to ensure they continue operating at their maximum potential. Commercial solar power maintenance is the ongoing practice of reviewing, cleaning, and servicing solar installations to ensure they are producing the maximum possible electricity output year after year. Without maintenance, even the best installed systems will gradually lose their operational efficiency and cost your business in energy savings.

Why Rooftop Solar Needs Regular Attention

Large, hard-to-access rooftops on commercial buildings, such as warehouses, offices, retail, and industrial spaces, provide ample area for installing solar arrays. However, dust, bird droppings, leaves, weathering, and other debris accumulate on these surfaces, blocking sunlight from reaching the solar panels. This unaddressed issue significantly reduces solar panel output, decreasing the profitability of the solar panels.

What’s Included in Routine Maintenance

Routine commercial solar power maintenance includes visual inspections and thermal inspections of the panels. They check for cracks, hotspots, and any signs of wearing on the mounting structure. They also test electrical connections, inverters, and wiring to see if everything is operating safely and efficiently. They address any issues before they are financially detrimental or become a safety hazard on your roof.

Cleaning: Small Task, Big Impact

Cleaning is an essential part of maintaining solar panels. Regular cleaning of the panels can help them operate at peak efficiency. This is especially true in urban or industrial areas where airborne dirt and pollutants can settle on panels and create grime. A maintenance service can clean the surface of the panels, protecting any untarnished surfaces and avoiding the loss of warranties from the manufacturer.

Monitoring Performance Data

Aside from cleaning and inspections, a solid maintenance program includes performance data monitoring. Many new solar installations include monitoring software that provides real time feedback on energy generation. Data reviews aid maintenance teams in the quick identification of underperforming panels or strings, allowing for focused repairs instead of system overhauls.

Protecting Your Warranty

Servicing your systems also protects your warranties. Most manufacturers need to see ongoing maintenance to process long-term warranty repairs, so if you neglect servicing, you may end up paying for repairs that should be covered. If you sell or lease the premises, a maintenance history will be valuable, and it will give buyers confidence that the system was well cared for.

Health and Safety at Height

When it comes to larger commercial roofs, managing health and safety risks becomes more critical. Height works require trained personnel, suitable access equipment, and compliance to safety regulations. By engaging a qualified maintenance provider, these risks are managed professionally, rather than in-house staff who may not have the training or equipment.

For businesses within the vicinity, commercial solar power maintenance from a local provider can actually mean the difference between a system that underperforms, and one that performs optimally and continues to provide positive returns for many years. You can rest assured that your solar investment is in good hands, as a maintenance plan is put in place.

Keeping Your Investment Working Hard

If there is no maintenance, solar power becomes useless. Servicing your system regularly prolongs the lifespan of your equipment, protects your warranties, maintains output, and allows your business to continue reaping the benefits of lower energy costs. If your commercial solar panels have not been inspected regularly, now is a great time to keep your investment working hard and schedule an inspection.

Due to increased energy prices and growing demands on businesses to prove their environmental authenticity, solar roofing for commercial use has become one of the most desirable upgrades for warehouses, retail units, and office buildings.

Making Use of Large Roof Areas

Commercial and industrial buildings generally have large, clear roof spaces that are suitable for solar panel installations. This can provide a significant percentage of a business’s electricity requirements from an asset that would otherwise be underutilized.

Understanding the Return on Investment

Solar installations on commercial roofs that qualify are now providing an excellent return on investment within several years due to the ongoing high prices of commercial electricity and providing many more years of drastically lowered operational expenses.

Roof Condition Comes First

Prior to any solar installation, an evaluation of the current commercial roof condition must take place. Installing solar panels on a roof that is close to the end of its life is an expensive error. Removal and reinstallation of panels due to future re-roofing poses additional costs.

Combining Re-Roofing With Solar

When a commercial roof is being replaced, new design opportunities should be taken to plan for an integrated solar array in the new roofing system. Structural capacity, built-in cable routing, and other support for solar systems should be incorporated.

Meeting Sustainability Targets

Many businesses see value in undertaking a project for commercial solar roofing beyond direct energy cost savings by helping them meet sustainability commitments and helping them meet the requirements for their environmental reporting.

If you want to take advantage of solar energy in your commercial or industrial buildings, our team can evaluate your roof and provide solutions on the best ways to integrate roofing work with the solar installation.