SOFFIT & FASCIA: How-To Install Your Own The Right Way

根据您的挑剔程度，安装铝拱形和筋膜可能是完成项目的简单组成部分，或者沮丧地进行了令人讨厌的练习。It all depends on how you go about it. And truth be told, there are plenty of so-called professionals who won’t take the time nor trouble to install aluminum soffit and fascia the right way. Soffit is the horizontal area underneath a roof overhang, and fascia is the vertical face of the edge of a roof. Any handy DIY person can have success installing this stuff, but your experience depends on understanding the challenges involved and the steps you take to achieve the three main aluminum soffit and fascia goals.

Three main soffit and fascia goals…

1. 防止水潜入铝的后面，并导致屋顶边缘变湿和腐烂。
2. 为铝的津贴不可阻挡习惯，以随着温度的变化而自由扩大和收缩。
3. 保护筋膜，以应对随之而来的各种恶劣天气。

To achieve these goals on your house, garage or cottage,you’ll need to meet three challenges of working with factory-finished aluminum soffit and fascia products.

Soffit＆Fascia挑战＃1：整齐地切割铝

使用工厂成熟的铝拱形和筋膜涉及切割手术和动力工具的组合。Besides a good pair of aviation snips for medium-sized cuts, I use a pair of small, first-aid scissors for completing tiny cuts accurately. And you can’t beat a sliding compound mitre saw for large, repetitive cuts. The blade I prefer is made especially for soffit and fascia work, and slices more cleanly and quietly than a regular crosscut blade. For best results, also give a quick shot of WD-40 to the teeth after every few cuts, to extend blade life.

The factory-applied finish on the aluminum you’re working with will last for decades outdoors, but it’s surprisingly easy to scratch while it’s going up.And with all the metal filings that build up around the saw after just a few cuts, it’s a dangerous place, especially when you’re working with dark brown aluminum that shows scratches so clearly. You can greatly reduce the scratch hazard by installing self-sticking felt pads onto the support arms of your saw. This protects the painted finish on those occasions when soffit and fascia needs to be cut with the finish facing down. I use the kind of felt sold to protect wood floors from furniture feet.

Soffit & Fascia Challenge#2: Install J-Channel and Soffit

This phase of the work is simple, but if brick or stone veneer will be going up later, J-channel gets a little trickier.You’ll need to determine the amount of space the veneer requires, then locate the J-channel that same distance from the wall. Snap a chalk line to act as a guide, then fasten the J-channel with screws along the mark.

接下来是拱腹，但要当心。不要以为整个建筑物的每片拱层的长度相同。屋檐宽度的变化是可能的，因此请测量您努力确保一个尺寸确实适合所有尺寸的区域。如果没有，您需要定制拱腹件才能适合。瞄准拱腹长度，将铝的外边缘从木屋屋檐框架的外表面约1/4英寸。

Aluminum nails sold for soffit and fascia work are soft and short, so it can be frustrating to drive them.我用框架指甲作为中心拳，以使指甲孔从拱腹部开始，但是我从不使用标准的铝制指甲来固定铝。

SOFFIT＆FASTIA挑战＃3：使筋膜正确

下次您有机会，测量坐在阴影中的一段棕色铝筋膜，然后将其移入烈日，然后在15分钟内再次测量。一块标准的12英尺件在加热时会扩大1/4英寸，这一事实会影响正确安装铝的最明显部分。当忽略扩张和收缩问题时，波浪状的，屈曲的筋膜是一种不断的眼神。当阳光照耀时，它会闪烁，并在阴天光滑。当然，您可以通过在炎热的天气中安装筋膜来使自己有利的赔率，但是这比这更重要，而且并不是很明显。

• Rule #1 for attractive fascia installation:尽可能少，从不在金属的前面。忽略这个细节，铝在炎热的日子里变得更大的讨厌习惯会引起难看的屈曲和波浪状。当陡峭的山墙末端保持陡峭的屋顶时，这一点尤其重要。

  

它没有在顶部戴上钉筋膜，而是将其塞在铝滴Ed边缘下方安装在屋顶周围。这提供了沿顶部边缘的大量握持力，但是只有当该进近的指甲与沿L形筋膜轮廓的底部边缘驱动到超大的孔中时，只有在距离时。这里的诀窍是使用足够长的耐腐蚀指甲，可以牢固地延伸到屋顶框架的实木中。标准的铝制指甲很少以这种方法所需的最小1 3/4英寸长，并且定期镀锌和电镀钉的时间会与铝的时间不佳。这就是为什么2英寸长的不锈钢指甲是确保筋膜底部边缘的方法。predrill略微超大的孔与拱腹的每个第三个凹槽对齐，然后将指甲钉在钉子上，足够紧张，以占据所有的懈怠。

为了良好的外观和防风雨，我从不面对指甲筋膜。我总是将聚氨酯填缝作为胶水。它具有匹配工厂成品铝的颜色，而聚氨酯的长期持有能力至少与指甲一样好。将一个小珠子放在关节下方，无论您在哪里都可以面对两块筋膜，然后将关节与胶带临时固定，直到填充填充剂。我在这项工作中使用了蒙版胶带和胶带，但最好的产品是Lepage制作的高强度双面无指甲安装胶带。它坚固，非常粘，并且在一两天内将其剥离时不会留下粘合残留物。使用胶水和胶带接近，长长的筋膜长度在屋顶的底部边缘结束。除了清洁外观外，胶合面板还没有固定在底层木材上，因此随着温度变化而自由移动。要理解的是，筋膜没有粘在底层木头上，只是粘在附近的筋膜上。

As with so many things in the building world, success with soffit and fascia is won in the details.Make allowances for thermal expansion, overlap joints to keep water out, and secure everything firmly against wind. Fascia is a part of your home that everyone will see, so it pays to be particular.