Asphalt Shingle Roof Replacement

Asphalt Roof Replacement

Copper and Asphalt Roofing

The great majority of our buildings with sloped roofs are covered with asphalt/fiberglass shingles due to its’ lightweight and affordability. Slate and tile are much heavier and require a more substantial structure to support the roof load. There is a vast sea of contractors out there today, who maybe gone tomorrow, making all sorts of promises and guarantees. If you are in need of a roof repair or replacement, our Project Managers are available to make an inspection and provide you with our recommendation so you can make the decision.

Most residential roofing contractors are enticed to promote a certain manufacturer or brand in order to earn free trips, cash bonus, and other incentives. Kaller Roofing chooses not to do that. We will recommend the best option for your project, which could include different shingle manufacturers, and price points to help you make the decision. But almost every time Kaller is going to recommend complete removal of the existing roofing shingles. Why? It’s the better job; we repair any damage to the wood roof deck, remove and replace old critically important metal flashing details. Yes it is a bit more expensive on the front end, but on the long haul it always pays off by not having leak problems down the road. No doubt you will hear other advice saying that it’s not necessary, trying to sell you on a cheap price. The problem with that is, the devil is in the details; compare the details in the specifications that you receive. Kaller will always submit for your approval a detailed, written specification and cost proposal.

You are welcome to schedule an appointment at our office to view our the shingle options from all the top shingle manufacturers.


Slate Roof Replacement

Slate Roof Repair

Styled Slate Roofing

We inventory new and salvage slate in various sizes and colors. Our crews are busy restoring and replacing slate roofs every day. So if you have a leak in your slate roof, we know how to fix it, if you’re considering a new slate roof, we know how to do it. With eighty years of experience Kaller Roofing has the know-how to get your slate roof project done right the first time.

You can schedule a visit to our shop to see our inventory and options available, colors, sizes, thicknesses, etc., and become informed and knowledgeable about making a slate roof decision.


Tile Roofing with Soldered Copper

Spanish Tile Roofing

Tile Roofing

We have many beautiful, expertly installed old tile roofs in our region here in the Delaware Valley. The chances are good that your tile is still in excellent condition, but if you are having leaks it’s probably not the tile causing the problem, but some metal flashing elements that have deteriorated and need to be replaced. The tile can last for hundreds of years, the copper or tin used in the flashing has a typical lifespan of fifty to seventy five years plus. Ludowici-Celadon was and is a major tile roofing manufacturer. We salvage and stockpile many of their different types of tiles and accessories, not to mention eighty years of experience taking these roofs apart, replacing deteriorated metal valleys or chimney flashings and putting the tile roof back together again like nothing ever happened.

Tile is an excellent choice if you are in the design or construction phase of new building. We would be happy to show you some of the projects we have performed from start to finish.


A metal roof can be an excellent option for a long term investment. Kaller’s long experience in building restoration includes the replacement of old tin roofs, newly fabricated and installed following the original design.

Today’s new design top interests include high grade, color coated aluminum or steel roofing systems. If you have a little copper bay window roof, or a terne coated stainless steel double lock standing seam roof on your museum, we’ve done it! We can help you through the design and material choices to find the right fit for your project. 

No matter what style you decide to choose, Kaller Roofing has the old-school craftsmen in house to properly fabricate and install your metal roof. If you want a truly unique roof that’s durable and beautiful, metal may be the way to go for your residential or commercial structure.


Metal Roof Replacement

Metal Roof with Tile

Copper Roofing

Flat Roof Outdoor Deck Replacement

Tiled Flat Roof

Flat Roof Replacement

Flat roof technology has advanced greatly, some of us are old enough to remember roofing trucks towing a hot tar kettle. Today with the advancement of material sciences, we have many other types of systems to consider, depending on the project design and parameters. New materials such as EPDM, TPO, PVC, Mod-Bit and others which we can help you understand what’s best for your project.

Flat roofs are critically important to get right, because they are “flat roofs”. Water doesn’t rapidly drain away such as on a slope roof. Perhaps you have a ponding condition on your flat roof that requires attention with new tapered roof panels to provide positive pitch towards the drain. Proper flashing details need to be expertly completed at all drainage, side walls, chimneys and any other building elements that intersect the flat roof. So if a problem exists with the adjoining carpentry or masonry that needs repair in the course of the project, Kaller has the in-house manpower to perform the project in its entirety.

The first step in flat roof work is almost always the recommendation to remove the existing deteriorated roofing materials and flashing. Next inspect the roof deck for any needed repairs due to leaking and deterioration. Roofing over existing roofing materials only leads to problems. Many contractors look to skip the removal process because it is labor intensive, cost of debris removal, ability to address the underlying roof deck or adjacent wall, chimney, window, etc. deterioration. Putting a new roof on top of an old roof traps the moisture that will later vaporize and blister the new roof. Think about it like putting new rugs in your house on top of the existing rugs.


Our area is rich with the history of cedar roofing shingles. And for much of our older architectural styles such as a Colonial era farmhouse, it is the only honest restoration choice. That look of course is duplicated today in many of our nicely built classic style cedar roofed homes. The difference today is the quality of the cedar shingles being offered. There is a big range in cedar product today because of the scarcity of true “heart wood” cedar. Years ago the forestry industry was much different, and the grading specifications much stricter. Kaller Roofing can help you through understanding the difference between high quality 100% vertical grain vs. flat grain cedar shingles. They both look the same when they are new, but a few years down the road they don’t. Cedar shingle appearance, availability and natural decay resistance is how it became a design choice back in the day. It still can be today if done correctly.

Cedar Roofing

Cedar Roof Replacement

Cedar Roof Replacement 

Independence Hall Restoration

Betsy Ross House Roof Restoration

Kaller has been privileged to be selected to do the restorations on many of our most valued historic buildings. The U.S. Department of Interior chose Kaller Roofing to do Independence Hall, listed on the world’s registry of historic buildings. The City of Philadelphia chose us to do the roof restoration on the Betsy Ross House. Philadelphia Fairmount Park Commission chose us to do the roof restoration on many of the historic mansions in Fairmount Park.

Sacred Heart Church Roof Replacement

Sacred Building Roofs

Immaculate Heart of Mary Church Roof Repair

We treasure our places of worship, and our region has a treasured amount of magnificent sacred buildings built with the finest of roofing materials – tile, slate, and copper. These great buildings were built by hardworking congregation members to be passed on to future generations. Selection of long lasting roofing materials was a key design element, not only for beauty but just as importantly the century lasting qualities so the next generation is not burdened with the maintenance expense. Kaller Roofing is the go-to source for many board of directors, property committees, sextons, and sham mashes. We have the craftsmen and the experience to diagnose difficult building leaks, repair work, and total restoration projects.

When the U.S. Government performed its nationwide pre-qualification process to select a proven group of roofing contractors with an extensive track record of performing on complex and difficult projects, Kaller was one of the few that met all the qualification requirements. Passing all the Department of Defense (DoD) security background checks, Kaller was provided DoD security clearance to perform roofing projects onsite at some of our most sensitive overseas locations at United States Embassies. The rooftop of an embassy building is the home for the satellite and antenna arrays that are critical to the operation of the embassy, and challenging equipment that needs to be properly built into the roof system. Demanding projects on multiple continents requiring all equipment, tools, materials, personnel to meet strict American specifications all shipped securely from the U.S. and guided through foreign ports per DoD requirements. Our own Delaware Valley Kaller Roofing personnel onsite for several months completing these projects, often times in the severest conditions.

Roof Repair Specialists

A good quality roof over our head, we all know, is essential to our wellbeing. For most of us our home is not only our center of life but also our largest investment and asset. When the time comes for roof repair or replacement, serious consideration needs to go into the selection process of who you can trust.

Consider the expertise of the Kaller Roofing firm which has been a long respected name in the industry since 1939. We are known for our high degree of craftsmanship, attention to detail, thorough knowledge of all major roofing types and exterior restoration. Let the expert craftsmen from Kaller take care of your every roofing concern and help design, build, and install the right roof for your home. From metal, slate, tile to asphalt shingled roofs and everything in between, we only use proven-quality building materials to ensure the highest level of long term performance, and your piece of mind that your home, your place of worship, your school is well protected.


Stellar Roofing Reviews

Dont’t take our word for it – here’s what our clients say:

Kaller Roofing rebuilt our fiberglass roof deck that was leaking in multiple places. They provided expert guidance leading up to the job, and did impeccable work. The crew were very professional, and the owner himself checked in multiple times to assure quality. Our new roof deck is not only more functional, but looks much better and will be a great space for years to come.

Mike O’Hara

Excellent workmanship, high professionalism in the entire crew, especially the foreman, Mike Austin. They were prompt, kept us apprised of the progress, excellent site cleanup at the end of each day, and upon job completion. Beautiful result. Will recommend to others. This is the second time Kaller has roofed our house, our experience 30 years ago brought us back this time.

Rob Nelson

Fine work. A great team. The guys (Rich, Carlos, Jake and Justin) were conscientious, professional and talented. It was a large job from a home owners view and they handled it well with an attention to detail. Hats off to Chuck and Ray also for their supervision and support. This twin is 120 years old and with care like this it can go another 120 years.


Jim Shugart

The roofers explained everything beforehand and were very prompt each day. They appeared to be very knowledgeable. We had a very bad experience with another roofing company and Keller was certainly much more professional and trustworthy. We will definitely use Keller again if we need a roofer.

Ellen Madof

I am the facilities manager of a large church in Greenville, Delaware. Kaller Roofing has been our roofing partner for over five years, and I highly recommend them. Ray Kaller is a skilled and experienced diagnostician, which I think is the most important part of the process of getting to a solution. The members of his team are also highly experienced and easy to work with. Give them a call!

Michael Sayer

Our home’s slate roof and ice damaged gutters were in need of professional help. An exhausting search lead us to Kaller and Sons. Chuck made the whole process painless while Rich and Carlos’s high level craftsmanship along with quality materials yielded amazing results. We couldn’t be happier. Thank you gentlemen.

John Davis Jr.