Take care updating older homes. Updating any part of your home's exterior should be done with care, but older houses can come with their fair share of woes. Rotted sills, leaky gutters, failed masonry joints and deteriorating windows can often be revealed through the updating process. "Older homes generally have some degree of damage from water infiltration over the years," says architect Jordan Parnass. "Renovating the exterior can be a great way to verify that vapor barriers and insulation are up to date — and inspect window frames, gutters and trim for any damage." Even painting can cause some problems. "Painting on an older home can be difficult, depending on how many layers of paint are on and how well it's been painted over time," says Human. "This can cause more prep work and material cost." If you're worried that your home's age may cause complications, it may be best to consult a professional.