The main roof is fine. It’s the flat section over the Florida room that’s the problem. After every afternoon storm there’s a puddle sitting up there for a day, and now there’s a brown ring on the ceiling right where the flat part meets the house. If you’re looking for help with flat roofing in Spring Valley Farms, you probably want to know where the water is getting in and whether this is a patch or a whole new roof.

Flat sections are hard to judge from the ground, and the leak inside often shows up a few feet from the spot that failed. It’s a frustrating place to be, especially when the last fix only lasted one rainy season.
APC Roofing is GAF Certified, licensed in Florida (CCC1337030) and insured. Your inspection and estimate are free. Call 407-270-1129 and a roofer will walk the flat section, check the edges and the drainage, and tell you plainly what’s going on.
Where flat roofing shows up on Spring Valley Farms homes
Most houses around Altamonte Springs don’t have one big flat roof. They have a pitched main roof in shingle or tile, plus a low-slope section somewhere: over a back porch, a Florida room, a carport, an attached garage or a rear addition.
Shingles need enough slope to shed water. On a roof that’s nearly flat, wind-driven rain pushes up under the overlaps, so these sections need a membrane instead, one continuous waterproof sheet. The membrane itself rarely fails in the middle. Trouble almost always starts at the seams, the edges, the drain or scupper, and the spot where the flat roof tucks under the main roof.
That last spot, the tie-in, is easy to overlook and a common source of leaks. When an addition was built, someone had to marry its flat roof to the existing roof, and if the flashing there was rushed, every heavy storm tests it.
Why Central Florida is hard on flat roofs
Rain comes fast. A summer thunderstorm can drop a lot of water in under an hour. A pitched roof sheds it in seconds. A flat roof has to move it to an edge or a drain, and any low spot holds it. Water that’s still sitting there two days after a storm is called ponding, and it wears out a membrane faster.
The sun never lets up. UV and heat dry out older membranes and asphalt-based roofs until they crack and blister. A dark flat roof also gets very hot by midafternoon, which you can feel in the room underneath.
Hurricane season adds wind to the list. The metal edge trim and the membrane corners take the most uplift. Once an edge lifts, wind can peel the membrane back like tape.
Flat roofing materials, in plain words
- TPO is a white single-ply membrane with seams welded together with hot air. It reflects sunlight, which helps keep a Florida room cooler.
- EPDM is a black rubber membrane with glued or taped seams. It stays flexible for a long time and is easy to repair.
- Built-up roofing is layers of felt and asphalt. It’s found on older homes and tends to crack and blister with age in Florida heat.
For a porch or Florida room in Central Florida, a white membrane often makes sense because of the heat. We’ll go over what fits your roof’s size, slope and drainage. Our EPDM roofing and flat roofing in Altamonte Springs pages go into more detail.
Repair or a new flat roof?
A repair usually makes sense when the leak is from one failed seam, a loose edge, a split around a pipe or a bad tie-in, and the rest of the membrane is still flexible.
A new roof starts to make more sense when the membrane is cracked or brittle across the whole surface, when water has soaked into the insulation or decking below, or when the roof has been patched so many times that the patches are leaking. If the section holds water because it was built with too little slope, a new roof is also the chance to fix the drainage with tapered insulation or a better edge or scupper.
If you just need a fix, see our flat roof repair in Altamonte Springs page.
How it works with APC Roofing
- Book your free inspection. Call 407-270-1129 or request a free online estimate.
- Get a clear, honest assessment and estimate. We check the seams, edges, tie-in, drainage and the deck underneath, and show you photos. You’ll hear whether it’s a repair or a replacement and why.
- The work gets done and the site gets cleaned up. You’ll know the plan before anyone starts.
A flat-roof leak tends to grow quietly. Water gets into the plywood and insulation under the membrane and spreads out, so by the time a ceiling sags, the repair is bigger than it needed to be.
Flat roof questions from Spring Valley Farms homeowners
Is standing water on my flat roof normal?
A little water right after a storm is normal. If it’s still there 48 hours later, the roof has a drainage problem worth fixing, because ponding speeds up wear and adds weight.
Can I put shingles on my porch roof instead?
Only if the slope is steep enough for the shingle maker’s minimum. On a true low-slope section, shingles will leak in wind-driven rain, so a membrane is the right choice.
Will a white flat roof make my Florida room cooler?
It usually helps. A reflective membrane keeps the roof surface much cooler than a dark one. How much you’ll feel it depends on the insulation under the roof.
Why does my flat roof leak only in heavy storms?
That pattern usually points to a seam, edge or tie-in that only lets water in when it’s driven by wind or when water backs up. It’s a good clue for finding the source.
Book your free flat roof inspection
Call 407-270-1129 or start your estimate online. You can see everything else we do nearby on our Spring Valley Farms roofing page.
Think about the next afternoon storm with no bucket on the floor and a Florida room you can actually use in August. Trust matters, and a straight answer is where it starts.
























