A limb resting on or hanging over a roof is not a cosmetic issue. It causes steady, cumulative damage to the surface underneath it.
Related: Tree trimming in Wimberley and the Hill Country.
The physical damage
Wind moves branches constantly, and that abrasion wears roofing material. Trees drop leaves, twigs and seeds that build up and hold moisture, encouraging rot and moss. Overhanging limbs give squirrels and other pests a route into the attic. And limbs extending a long way from the trunk are structurally the most likely points of failure in high wind or under their own weight.
Where insurance comes in
A limb resting on a roof does its damage slowly rather than all at once, which is why it is worth dealing with before it becomes a repair. How any particular policy treats that is a question for your insurer.
What protects you
Keep three to six feet of clearance between limbs and the roof. Deal with overextended limbs early by reducing their weight or removing them. Keep dated photographs and records of pruning and inspections. Have trees near the house looked at annually.
Roof clearance work is covered under tree trimming, and on oaks under oak tree trimming, where the season matters.
Why limbs reach over roofs here
Local terrain is rocky limestone and steep slopes, so trees grow wide and lean toward light rather than standing straight. Combined with shallow root plates, that produces exactly what you see across the Hill Country: long, overextended limbs reaching a long way from the trunk, often straight over a roofline.
Those overextended limbs are structurally the most likely part of a tree to fail, because the leverage at the attachment point is greatest and the wood out at the tips is youngest.
How to fix it properly
Reducing the weight at the ends of the limbs does more good than lifting the whole canopy. Raising the canopy while leaving all the weight out at the tips raises the center of gravity and leaves long levers that fail in wind, which is the opposite of what you wanted.
Prune no more than 25% of the canopy in a year, avoid removing branches larger than four to six inches in diameter where you have a choice, and cut just outside the branch collar so the wound can close. Aim for three to six feet of clearance between limbs and the roof.
If it is an oak
Handling changes. Sap-feeding beetles are drawn to fresh oak cuts, so every wound is painted promptly whatever the month. Roof clearance on an oak can be booked whenever it suits you on that basis.
The insurance angle
Keeping a dated record of pruning and inspections on your property is worth doing for your planning. If you want to know how your policy treats roof damage from a tree, ask your insurer.
Got limbs on the roof?
It is usually a short job and considerably cheaper than the roof repair. We will quote it while we are there.